157731754320 has 480 divisors, whose sum is σ = 643859623680. Its totient is φ = 33801338880.

The previous prime is 157731754307. The next prime is 157731754321. The reversal of 157731754320 is 23457137751.

157731754320 is a `hidden beast` number, since 1 + 5 + 7 + 7 + 317 + 5 + 4 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157731754321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9280230 + ... + 9297210.

It is an arithmetic number, because the mean of its divisors is an integer number (1341374216).

Almost surely, 2^157731754320 is an apocalyptic number.

157731754320 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 157731754320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321929811840).

157731754320 is an abundant number, since it is smaller than the sum of its proper divisors (486127869360).

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

157731754320 is a wasteful number, since it uses less digits than its factorization.

157731754320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17123 (or 17114 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 157731754320 in words is "one hundred fifty-seven billion, seven hundred thirty-one million, seven hundred fifty-four thousand, three hundred twenty".