157818685696 has 81 divisors (see below), whose sum is σ = 366556217139. Its totient is φ = 67617510912.

The previous prime is 157818685669. The next prime is 157818685721. The reversal of 157818685696 is 696586818751.

The square root of 157818685696 is 397264.

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

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44491795 + ... + 44495341.

Almost surely, 2^157818685696 is an apocalyptic number.

157818685696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

157818685696 is the 397264-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157818685696

157818685696 is an abundant number, since it is smaller than the sum of its proper divisors (208737531443).

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

157818685696 is an frugal number, since it uses more digits than its factorization.

157818685696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124 (or 3556 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 70.

The spelling of 157818685696 in words is "one hundred fifty-seven billion, eight hundred eighteen million, six hundred eighty-five thousand, six hundred ninety-six".