155111505422124 has 12 divisors (see below), whose sum is σ = 361926845984984. Its totient is φ = 51703835140704.

The previous prime is 155111505422077. The next prime is 155111505422147. The reversal of 155111505422124 is 421224505111551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×155111505422124² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6462979392577 + ... + 6462979392600.

Almost surely, 2^{155111505422124} is an apocalyptic number.

It is an amenable number.

155111505422124 is an abundant number, since it is smaller than the sum of its proper divisors (206815340562860).

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

155111505422124 is a wasteful number, since it uses less digits than its factorization.

155111505422124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12925958785184 (or 12925958785182 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 39.

The spelling of 155111505422124 in words is "one hundred fifty-five trillion, one hundred eleven billion, five hundred five million, four hundred twenty-two thousand, one hundred twenty-four".