157521322331 has 8 divisors (see below), whose sum is σ = 161437140480. Its totient is φ = 153653551272.

The previous prime is 157521322327. The next prime is 157521322333. The reversal of 157521322331 is 133223125751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157521322331 - 2² = 157521322327 is a prime.

It is a super-2 number, since 2×157521322331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157521322291 and 157521322300.

It is not an unprimeable number, because it can be changed into a prime (157521322333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12005135 + ... + 12018248.

It is an arithmetic number, because the mean of its divisors is an integer number (20179642560).

Almost surely, 2^157521322331 is an apocalyptic number.

157521322331 is a deficient number, since it is larger than the sum of its proper divisors (3915818149).

157521322331 is an equidigital number, since it uses as much as digits as its factorization.

157521322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24023545.

The product of its digits is 37800, while the sum is 35.

The spelling of 157521322331 in words is "one hundred fifty-seven billion, five hundred twenty-one million, three hundred twenty-two thousand, three hundred thirty-one".