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70489906864 = 24131911774313
BaseRepresentation
bin100000110100110000…
…1101001111010110000
320201221120012021202021
41001221201221322300
52123330404004424
652214351201224
75043543215356
oct1015141517260
9221846167667
1070489906864
1127992795383
12117b2b16214
136854aa7680
1435a9b017d6
151c786334e4
hex1069869eb0

70489906864 has 40 divisors (see below), whose sum is σ = 147850036992. Its totient is φ = 32363450880.

The previous prime is 70489906813. The next prime is 70489906873. The reversal of 70489906864 is 46860998407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847429 + ... + 926884.

Almost surely, 270489906864 is an apocalyptic number.

It is an amenable number.

70489906864 is an abundant number, since it is smaller than the sum of its proper divisors (77360130128).

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

70489906864 is a wasteful number, since it uses less digits than its factorization.

70489906864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774525 (or 1774519 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 70489906864 in words is "seventy billion, four hundred eighty-nine million, nine hundred six thousand, eight hundred sixty-four".

Divisors: 1 2 4 8 13 16 26 52 104 191 208 382 764 1528 2483 3056 4966 9932 19864 39728 1774313 3548626 7097252 14194504 23066069 28389008 46132138 92264276 184528552 338893783 369057104 677787566 1355575132 2711150264 4405619179 5422300528 8811238358 17622476716 35244953432 70489906864