155111244813 has 128 divisors (see below), whose sum is σ = 284586086400. Its totient is φ = 81517363200.

The previous prime is 155111244803. The next prime is 155111244839. The reversal of 155111244813 is 318442111551.

155111244813 is a `hidden beast` number, since 1 + 5 + 51 + 1 + 124 + 481 + 3 = 666.

It is not a de Polignac number, because 155111244813 - 2⁵ = 155111244781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155111244803) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31063245 + ... + 31068237.

It is an arithmetic number, because the mean of its divisors is an integer number (2223328800).

Almost surely, 2^155111244813 is an apocalyptic number.

It is an amenable number.

155111244813 is a deficient number, since it is larger than the sum of its proper divisors (129474841587).

155111244813 is a wasteful number, since it uses less digits than its factorization.

155111244813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280 (or 5274 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The spelling of 155111244813 in words is "one hundred fifty-five billion, one hundred eleven million, two hundred forty-four thousand, eight hundred thirteen".