157213552322 has 18 divisors (see below), whose sum is σ = 237283586379. Its totient is φ = 78122018160.

The previous prime is 157213552313. The next prime is 157213552337. The reversal of 157213552322 is 223255312751.

It can be written as a sum of positive squares in 5 ways, for example, as 555120721 + 156658431601 = 23561^2 + 395801^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=280369.

It is a super-2 number, since 2×157213552322² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 101492804 + ... + 101494352.

Almost surely, 2^157213552322 is an apocalyptic number.

157213552322 is a deficient number, since it is larger than the sum of its proper divisors (80070034057).

157213552322 is an frugal number, since it uses more digits than its factorization.

157213552322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462 (or 1732 counting only the distinct ones).

The product of its digits is 126000, while the sum is 38.

The spelling of 157213552322 in words is "one hundred fifty-seven billion, two hundred thirteen million, five hundred fifty-two thousand, three hundred twenty-two".