157521716252 has 12 divisors (see below), whose sum is σ = 277203021480. Its totient is φ = 78320852976.

The previous prime is 157521716221. The next prime is 157521716269. The reversal of 157521716252 is 252617125751.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110000483 + ... + 110001914.

It is an arithmetic number, because the mean of its divisors is an integer number (23100251790).

Almost surely, 2^157521716252 is an apocalyptic number.

It is an amenable number.

157521716252 is a deficient number, since it is larger than the sum of its proper divisors (119681305228).

157521716252 is a wasteful number, since it uses less digits than its factorization.

157521716252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220002580 (or 220002578 counting only the distinct ones).

The product of its digits is 294000, while the sum is 44.

The spelling of 157521716252 in words is "one hundred fifty-seven billion, five hundred twenty-one million, seven hundred sixteen thousand, two hundred fifty-two".