2156177120 has 48 divisors (see below), whose sum is σ = 5096876400. Its totient is φ = 861978624.

The previous prime is 2156177119. The next prime is 2156177137. The reversal of 2156177120 is 217716512.

It is a super-2 number, since 2×2156177120² = 9298199545622988800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429344 + ... + 434336.

It is an arithmetic number, because the mean of its divisors is an integer number (106184925).

Almost surely, 2^2156177120 is an apocalyptic number.

2156177120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156177120 is an abundant number, since it is smaller than the sum of its proper divisors (2940699280).

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

2156177120 is a wasteful number, since it uses less digits than its factorization.

2156177120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7707 (or 7699 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 2156177120 is about 46434.6543004252. The cubic root of 2156177120 is about 1291.8977576312.

The spelling of 2156177120 in words is "two billion, one hundred fifty-six million, one hundred seventy-seven thousand, one hundred twenty".