155255264644 has 12 divisors (see below), whose sum is σ = 271715474268. Its totient is φ = 77622272000.

The previous prime is 155255264629. The next prime is 155255264657. The reversal of 155255264644 is 446462552551.

It can be written as a sum of positive squares in 2 ways, for example, as 135599224644 + 19656040000 = 368238^2 + 140200^2 .

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, 1274557 + ... + 1391044.

It is an arithmetic number, because the mean of its divisors is an integer number (22642956189).

Almost surely, 2^155255264644 is an apocalyptic number.

It is an amenable number.

155255264644 is a deficient number, since it is larger than the sum of its proper divisors (116460209624).

155255264644 is a wasteful number, since it uses less digits than its factorization.

155255264644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680166 (or 2680164 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 49.

The spelling of 155255264644 in words is "one hundred fifty-five billion, two hundred fifty-five million, two hundred sixty-four thousand, six hundred forty-four".