2155012015004 has 6 divisors (see below), whose sum is σ = 3771271026264. Its totient is φ = 1077506007500.

The previous prime is 2155012014997. The next prime is 2155012015049. The reversal of 2155012015004 is 4005102105512.

It is a super-2 number, since 2×2155012015004² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269376501872 + ... + 269376501879.

It is an arithmetic number, because the mean of its divisors is an integer number (628545171044).

Almost surely, 2^{2155012015004} is an apocalyptic number.

It is an amenable number.

2155012015004 is a deficient number, since it is larger than the sum of its proper divisors (1616259011260).

2155012015004 is a wasteful number, since it uses less digits than its factorization.

2155012015004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538753003755 (or 538753003753 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 2155012015004 in words is "two trillion, one hundred fifty-five billion, twelve million, fifteen thousand, four".