157621643715 has 32 divisors (see below), whose sum is σ = 281083806720. Its totient is φ = 74955677184.

The previous prime is 157621643713. The next prime is 157621643723. The reversal of 157621643715 is 517346126751.

It is not a de Polignac number, because 157621643715 - 2¹ = 157621643713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157621643713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16261579 + ... + 16271268.

It is an arithmetic number, because the mean of its divisors is an integer number (8783868960).

Almost surely, 2^157621643715 is an apocalyptic number.

157621643715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

157621643715 is a deficient number, since it is larger than the sum of its proper divisors (123462163005).

157621643715 is a wasteful number, since it uses less digits than its factorization.

157621643715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32532891.

The product of its digits is 1058400, while the sum is 48.

The spelling of 157621643715 in words is "one hundred fifty-seven billion, six hundred twenty-one million, six hundred forty-three thousand, seven hundred fifteen".