157247657728 has 216 divisors, whose sum is σ = 396761003520. Its totient is φ = 61782497280.

The previous prime is 157247657701. The next prime is 157247657741. The reversal of 157247657728 is 827756742751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7377775 + ... + 7399057.

Almost surely, 2^157247657728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157247657728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198380501760).

157247657728 is an abundant number, since it is smaller than the sum of its proper divisors (239513345792).

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

157247657728 is a wasteful number, since it uses less digits than its factorization.

157247657728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21363 (or 21342 counting only the distinct ones).

The product of its digits is 46099200, while the sum is 61.

The spelling of 157247657728 in words is "one hundred fifty-seven billion, two hundred forty-seven million, six hundred fifty-seven thousand, seven hundred twenty-eight".