157864428650 has 24 divisors (see below), whose sum is σ = 293639202540. Its totient is φ = 63143327360.

The previous prime is 157864428581. The next prime is 157864428703. The reversal of 157864428650 is 56824468751.

It can be written as a sum of positive squares in 6 ways, for example, as 29307043249 + 128557385401 = 171193^2 + 358549^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1812296 + ... + 1897404.

Almost surely, 2^157864428650 is an apocalyptic number.

157864428650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157864428650 is a deficient number, since it is larger than the sum of its proper divisors (135774773890).

157864428650 is a wasteful number, since it uses less digits than its factorization.

157864428650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122218 (or 122213 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 157864428650 in words is "one hundred fifty-seven billion, eight hundred sixty-four million, four hundred twenty-eight thousand, six hundred fifty".