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BaseRepresentation
bin11110010101101000011111…
…111110111011111010001111
3122111102120222002010020002101
4132111220133332323322033
5114442041011044001201
61151435550033335531
740050565664133331
oct3625503776737217
9574376862106071
10133427990609551
1139572547269570
1212b6b2a41075a7
13595b289703b81
1424d3d40881451
151065b7cbe4d01
hex795a1ffbbe8f

133427990609551 has 8 divisors (see below), whose sum is σ = 145569641091408. Its totient is φ = 121288312320000.

The previous prime is 133427990609519. The next prime is 133427990609561. The reversal of 133427990609551 is 155906099724331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133427990609551 - 25 = 133427990609519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133427990609561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492906610 + ... + 493177231.

It is an arithmetic number, because the mean of its divisors is an integer number (18196205136426).

Almost surely, 2133427990609551 is an apocalyptic number.

133427990609551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133427990609551 is the 6174325-th centered heptagonal number and also the 5165811-st centered decagonal number.

133427990609551 is a deficient number, since it is larger than the sum of its proper divisors (12141650481857).

133427990609551 is a wasteful number, since it uses less digits than its factorization.

133427990609551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986096153.

The product of its (nonzero) digits is 55112400, while the sum is 64.

The spelling of 133427990609551 in words is "one hundred thirty-three trillion, four hundred twenty-seven billion, nine hundred ninety million, six hundred nine thousand, five hundred fifty-one".