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12797725948 = 227213792
BaseRepresentation
bin10111110101100110…
…11100110011111100
31020000220011211121221
423322303130303330
5202202204212243
65513523403124
7632065606240
oct137263346374
936026154557
1012797725948
115477a89a17
122591b234a4
13128c4cc607
14895954420
154ed7e8bed
hex2facdccfc

12797725948 has 18 divisors (see below), whose sum is σ = 25596649176. Its totient is φ = 5484483144.

The previous prime is 12797725907. The next prime is 12797725981. The reversal of 12797725948 is 84952779721.

It is a super-2 number, since 2×127977259482 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 587923 + ... + 609301.

Almost surely, 212797725948 is an apocalyptic number.

It is an amenable number.

12797725948 is an abundant number, since it is smaller than the sum of its proper divisors (12798923228).

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

12797725948 is an frugal number, since it uses more digits than its factorization.

12797725948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42769 (or 21388 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 61.

The spelling of 12797725948 in words is "twelve billion, seven hundred ninety-seven million, seven hundred twenty-five thousand, nine hundred forty-eight".

Divisors: 1 2 4 7 14 28 21379 42758 85516 149653 299306 598612 457061641 914123282 1828246564 3199431487 6398862974 12797725948