2156066030020 has 48 divisors (see below), whose sum is σ = 5185783266048. Its totient is φ = 737619096960.

The previous prime is 2156066030011. The next prime is 2156066030021. The reversal of 2156066030020 is 200306606512.

It is not an unprimeable number, because it can be changed into a prime (2156066030021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16638792 + ... + 16767871.

It is an arithmetic number, because the mean of its divisors is an integer number (108037151376).

Almost surely, 2^{2156066030020} is an apocalyptic number.

2156066030020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156066030020 is an abundant number, since it is smaller than the sum of its proper divisors (3029717236028).

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

2156066030020 is a wasteful number, since it uses less digits than its factorization.

2156066030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33407140 (or 33407138 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 2156066030020 in words is "two trillion, one hundred fifty-six billion, sixty-six million, thirty thousand, twenty".