2155501162776 has 64 divisors (see below), whose sum is σ = 5817057210720. Its totient is φ = 661655715840.

The previous prime is 2155501162747. The next prime is 2155501162823. The reversal of 2155501162776 is 6772611055512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8073705 + ... + 8336408.

Almost surely, 2^{2155501162776} is an apocalyptic number.

2155501162776 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2155501162776 is an abundant number, since it is smaller than the sum of its proper divisors (3661556047944).

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

2155501162776 is a wasteful number, since it uses less digits than its factorization.

2155501162776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16410556 (or 16410552 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 48.

The spelling of 2155501162776 in words is "two trillion, one hundred fifty-five billion, five hundred one million, one hundred sixty-two thousand, seven hundred seventy-six".