157831573680 has 320 divisors, whose sum is σ = 593811993600. Its totient is φ = 38213959680.

The previous prime is 157831573649. The next prime is 157831573763. The reversal of 157831573680 is 86375138751.

157831573680 is a `hidden beast` number, since 1 + 5 + 7 + 8 + 3 + 1 + 573 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21071376 + ... + 21078864.

It is an arithmetic number, because the mean of its divisors is an integer number (1855662480).

Almost surely, 2^157831573680 is an apocalyptic number.

157831573680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157831573680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296905996800).

157831573680 is an abundant number, since it is smaller than the sum of its proper divisors (435980419920).

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

157831573680 is a wasteful number, since it uses less digits than its factorization.

157831573680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8409 (or 8397 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 157831573680 in words is "one hundred fifty-seven billion, eight hundred thirty-one million, five hundred seventy-three thousand, six hundred eighty".