157666508 has 12 divisors (see below), whose sum is σ = 276037272. Its totient is φ = 78798720.

The previous prime is 157666501. The next prime is 157666511. The reversal of 157666508 is 805666751.

157666508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (157666501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3548 + ... + 18108.

It is an arithmetic number, because the mean of its divisors is an integer number (23003106).

Almost surely, 2^157666508 is an apocalyptic number.

It is an amenable number.

157666508 is a deficient number, since it is larger than the sum of its proper divisors (118370764).

157666508 is a wasteful number, since it uses less digits than its factorization.

157666508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17272 (or 17270 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 157666508 is about 12556.5324831340. The cubic root of 157666508 is about 540.2313914604.

The spelling of 157666508 in words is "one hundred fifty-seven million, six hundred sixty-six thousand, five hundred eight".