157796439696 has 135 divisors (see below), whose sum is σ = 513819256041. Its totient is φ = 45075163392.

The previous prime is 157796439683. The next prime is 157796439709. The reversal of 157796439696 is 696934697751.

The square root of 157796439696 is 397236.

It is a perfect power (a square), and thus also a powerful number.

157796439696 is a `hidden beast` number, since 1 + 577 + 9 + 6 + 43 + 9 + 6 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (157796439683) and next prime (157796439709).

It can be written as a sum of positive squares in only one way, i.e., 3253105296 + 154543334400 = 57036^2 + 393120^2 .

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 33365460 + ... + 33370188.

Almost surely, 2^157796439696 is an apocalyptic number.

157796439696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

157796439696 is the 397236-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157796439696

157796439696 is an abundant number, since it is smaller than the sum of its proper divisors (356022816345).

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

157796439696 is an frugal number, since it uses more digits than its factorization.

157796439696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9486 (or 4741 counting only the distinct ones).

The product of its digits is 462944160, while the sum is 72.

The spelling of 157796439696 in words is "one hundred fifty-seven billion, seven hundred ninety-six million, four hundred thirty-nine thousand, six hundred ninety-six".