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642426225036 = 223593372724223
BaseRepresentation
bin10010101100100111001…
…01100100000110001100
32021102012210021121001020
421112103211210012030
541011142103200121
61211043155314140
764261630546131
oct11262345440614
92242183247036
10642426225036
112284a69463a2
12a460b2ab950
134877157b38b
1423144b7a588
1511a9e85b1c6
hex959396418c

642426225036 has 48 divisors (see below), whose sum is σ = 1501987221504. Its totient is φ = 213714775296.

The previous prime is 642426225029. The next prime is 642426225053. The reversal of 642426225036 is 630522624246.

It is a happy number.

It is a super-2 number, since 2×6424262250362 (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26509221 + ... + 26533443.

It is an arithmetic number, because the mean of its divisors is an integer number (31291400448).

Almost surely, 2642426225036 is an apocalyptic number.

It is an amenable number.

642426225036 is an abundant number, since it is smaller than the sum of its proper divisors (859560996468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642426225036 is a wasteful number, since it uses less digits than its factorization.

642426225036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28550 (or 28548 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 642426225036 in words is "six hundred forty-two billion, four hundred twenty-six million, two hundred twenty-five thousand, thirty-six".

Divisors: 1 2 3 4 6 12 593 1186 1779 2372 3558 3727 7116 7454 11181 14908 22362 24223 44724 48446 72669 96892 145338 290676 2210111 4420222 6630333 8840444 13260666 14364239 26521332 28728478 43092717 57456956 86185434 90279121 172370868 180558242 270837363 361116484 541674726 1083349452 53535518753 107071037506 160606556259 214142075012 321213112518 642426225036