157622034578 has 18 divisors (see below), whose sum is σ = 238362890247. Its totient is φ = 78172911180.

The previous prime is 157622034571. The next prime is 157622034587. The reversal of 157622034578 is 875430226751.

It can be written as a sum of positive squares in only one way, i.e., 78811017289 + 78811017289 = 280733^2 + 280733^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=280733.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157622034571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73550975 + ... + 73553117.

Almost surely, 2^157622034578 is an apocalyptic number.

157622034578 is a deficient number, since it is larger than the sum of its proper divisors (80740855669).

157622034578 is an frugal number, since it uses more digits than its factorization.

157622034578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

Multiplying 157622034578 by its sum of digits (50), we get a square (7881101728900 = 2807330²).

The spelling of 157622034578 in words is "one hundred fifty-seven billion, six hundred twenty-two million, thirty-four thousand, five hundred seventy-eight".