2151156171616 has 24 divisors (see below), whose sum is σ = 4333579150824. Its totient is φ = 1050564641280.

The previous prime is 2151156171601. The next prime is 2151156171617. The reversal of 2151156171616 is 6161716511512.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151156171617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781668745 + ... + 781671496.

It is an arithmetic number, because the mean of its divisors is an integer number (180565797951).

Almost surely, 2^{2151156171616} is an apocalyptic number.

It is an amenable number.

2151156171616 is an abundant number, since it is smaller than the sum of its proper divisors (2182422979208).

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

2151156171616 is a wasteful number, since it uses less digits than its factorization.

2151156171616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563340294 (or 1563340286 counting only the distinct ones).

The product of its digits is 75600, while the sum is 43.

The spelling of 2151156171616 in words is "two trillion, one hundred fifty-one billion, one hundred fifty-six million, one hundred seventy-one thousand, six hundred sixteen".