2156475073020 has 48 divisors (see below), whose sum is σ = 6039319432608. Its totient is φ = 574946759680.

The previous prime is 2156475073019. The next prime is 2156475073021. The reversal of 2156475073020 is 203705746512.

It is an interprime number because it is at equal distance from previous prime (2156475073019) and next prime (2156475073021).

It is a super-2 number, since 2×2156475073020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156475073021) 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, 3231969 + ... + 3841688.

It is an arithmetic number, because the mean of its divisors is an integer number (125819154846).

Almost surely, 2^{2156475073020} is an apocalyptic number.

2156475073020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156475073020 is an abundant number, since it is smaller than the sum of its proper divisors (3882844359588).

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

2156475073020 is a wasteful number, since it uses less digits than its factorization.

2156475073020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078750 (or 7078748 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 2156475073020 in words is "two trillion, one hundred fifty-six billion, four hundred seventy-five million, seventy-three thousand, twenty".