155113455511044 has 144 divisors (see below), whose sum is σ = 399297251808000. Its totient is φ = 50764655377152.

The previous prime is 155113455510991. The next prime is 155113455511067. The reversal of 155113455511044 is 440115554311551.

155113455511044 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 1 + 3 + 45 + 551 + 10 + 44 = 666.

It is a super-3 number, since 3×155113455511044³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229955982 + ... + 230629530.

It is an arithmetic number, because the mean of its divisors is an integer number (2772897582000).

Almost surely, 2^{155113455511044} is an apocalyptic number.

It is an amenable number.

155113455511044 is an abundant number, since it is smaller than the sum of its proper divisors (244183796296956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155113455511044 is a wasteful number, since it uses less digits than its factorization.

155113455511044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674194 (or 674189 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 45.

The spelling of 155113455511044 in words is "one hundred fifty-five trillion, one hundred thirteen billion, four hundred fifty-five million, five hundred eleven thousand, forty-four".