2156162672200 has 48 divisors (see below), whose sum is σ = 5013175737780. Its totient is φ = 862448290560.

The previous prime is 2156162672173. The next prime is 2156162672249. The reversal of 2156162672200 is 22762616512.

It can be written as a sum of positive squares in 6 ways, for example, as 1154838233956 + 1001324438244 = 1074634^2 + 1000662^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17974822 + ... + 18094378.

Almost surely, 2^{2156162672200} is an apocalyptic number.

2156162672200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156162672200 is an abundant number, since it is smaller than the sum of its proper divisors (2857013065580).

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

2156162672200 is a wasteful number, since it uses less digits than its factorization.

2156162672200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209746 (or 209737 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 2156162672200 in words is "two trillion, one hundred fifty-six billion, one hundred sixty-two million, six hundred seventy-two thousand, two hundred".