155121523052 has 48 divisors (see below), whose sum is σ = 280288562400. Its totient is φ = 75062246400.

The previous prime is 155121523001. The next prime is 155121523087. The reversal of 155121523052 is 250325121551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37841699 + ... + 37845797.

It is an arithmetic number, because the mean of its divisors is an integer number (5839345050).

Almost surely, 2^155121523052 is an apocalyptic number.

It is an amenable number.

155121523052 is a deficient number, since it is larger than the sum of its proper divisors (125167039348).

155121523052 is a wasteful number, since it uses less digits than its factorization.

155121523052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 155121523052 in words is "one hundred fifty-five billion, one hundred twenty-one million, five hundred twenty-three thousand, fifty-two".