155051131915 has 16 divisors (see below), whose sum is σ = 190009901088. Its totient is φ = 121419357696.

The previous prime is 155051131901. The next prime is 155051131951. The reversal of 155051131915 is 519131150551.

It is a cyclic number.

It is not a de Polignac number, because 155051131915 - 2¹¹ = 155051129867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560889 + ... + 790378.

It is an arithmetic number, because the mean of its divisors is an integer number (11875618818).

Almost surely, 2^155051131915 is an apocalyptic number.

155051131915 is a deficient number, since it is larger than the sum of its proper divisors (34958769173).

155051131915 is a wasteful number, since it uses less digits than its factorization.

155051131915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351758.

The product of its (nonzero) digits is 16875, while the sum is 37.

The spelling of 155051131915 in words is "one hundred fifty-five billion, fifty-one million, one hundred thirty-one thousand, nine hundred fifteen".