157628617320 has 128 divisors (see below), whose sum is σ = 481448448000. Its totient is φ = 41274804480.

The previous prime is 157628617303. The next prime is 157628617331. The reversal of 157628617320 is 23716826751.

It is a self number, because there is not a number n which added to its sum of digits gives 157628617320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6437661 + ... + 6462099.

It is an arithmetic number, because the mean of its divisors is an integer number (3761316000).

Almost surely, 2^157628617320 is an apocalyptic number.

157628617320 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 157628617320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240724224000).

157628617320 is an abundant number, since it is smaller than the sum of its proper divisors (323819830680).

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

157628617320 is a wasteful number, since it uses less digits than its factorization.

157628617320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25423 (or 25419 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 157628617320 in words is "one hundred fifty-seven billion, six hundred twenty-eight million, six hundred seventeen thousand, three hundred twenty".