157218071858 has 16 divisors (see below), whose sum is σ = 249707716920. Its totient is φ = 73982478336.

The previous prime is 157218071833. The next prime is 157218071869. The reversal of 157218071858 is 858170812751.

157218071858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 150448567129 + 6769504729 = 387877^2 + 82277^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294010 + ... + 1410282.

Almost surely, 2^157218071858 is an apocalyptic number.

157218071858 is a deficient number, since it is larger than the sum of its proper divisors (92489645062).

157218071858 is a wasteful number, since it uses less digits than its factorization.

157218071858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156061.

The product of its (nonzero) digits is 1254400, while the sum is 53.

The spelling of 157218071858 in words is "one hundred fifty-seven billion, two hundred eighteen million, seventy-one thousand, eight hundred fifty-eight".