155663916 has 12 divisors (see below), whose sum is σ = 363215832. Its totient is φ = 51887968.

The previous prime is 155663899. The next prime is 155663929. The reversal of 155663916 is 619366551.

155663916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6485985 + ... + 6486008.

It is an arithmetic number, because the mean of its divisors is an integer number (30267986).

Almost surely, 2^155663916 is an apocalyptic number.

It is an amenable number.

155663916 is an abundant number, since it is smaller than the sum of its proper divisors (207551916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155663916 is a wasteful number, since it uses less digits than its factorization.

155663916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972000 (or 12971998 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 155663916 is about 12476.5346150283. The cubic root of 155663916 is about 537.9343995782.

The spelling of 155663916 in words is "one hundred fifty-five million, six hundred sixty-three thousand, nine hundred sixteen".