157815773974 has 16 divisors (see below), whose sum is σ = 253232593488. Its totient is φ = 73500613632.

The previous prime is 157815773963. The next prime is 157815773981. The reversal of 157815773974 is 479377518751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23922684 + ... + 23929279.

It is an arithmetic number, because the mean of its divisors is an integer number (15827037093).

Almost surely, 2^157815773974 is an apocalyptic number.

157815773974 is a deficient number, since it is larger than the sum of its proper divisors (95416819514).

157815773974 is a wasteful number, since it uses less digits than its factorization.

157815773974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47852079.

The product of its digits is 51861600, while the sum is 64.

The spelling of 157815773974 in words is "one hundred fifty-seven billion, eight hundred fifteen million, seven hundred seventy-three thousand, nine hundred seventy-four".