2156963712 has 32 divisors (see below), whose sum is σ = 5729435880. Its totient is φ = 718987776.

The previous prime is 2156963707. The next prime is 2156963719. The reversal of 2156963712 is 2173696512.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156963719) 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, 2808163 + ... + 2808930.

Almost surely, 2^2156963712 is an apocalyptic number.

It is an amenable number.

2156963712 is an abundant number, since it is smaller than the sum of its proper divisors (3572472168).

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

2156963712 is an equidigital number, since it uses as much as digits as its factorization.

2156963712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5617110 (or 5617098 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 2156963712 is about 46443.1234091765. The cubic root of 2156963712 is about 1292.0548370109.

The spelling of 2156963712 in words is "two billion, one hundred fifty-six million, nine hundred sixty-three thousand, seven hundred twelve".