155780338264 has 32 divisors (see below), whose sum is σ = 296068147200. Its totient is φ = 76830717600.

The previous prime is 155780338247. The next prime is 155780338277. The reversal of 155780338264 is 462833087551.

It is a happy number.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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, 546969 + ... + 781495.

It is an arithmetic number, because the mean of its divisors is an integer number (9252129600).

Almost surely, 2^155780338264 is an apocalyptic number.

It is an amenable number.

155780338264 is a deficient number, since it is larger than the sum of its proper divisors (140287808936).

155780338264 is a wasteful number, since it uses less digits than its factorization.

155780338264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235663 (or 235659 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 155780338264 in words is "one hundred fifty-five billion, seven hundred eighty million, three hundred thirty-eight thousand, two hundred sixty-four".