2156046407643 has 32 divisors (see below), whose sum is σ = 2934444312576. Its totient is φ = 1407769786368.

The previous prime is 2156046407629. The next prime is 2156046407651. The reversal of 2156046407643 is 3467046406512.

It is a de Polignac number, because none of the positive numbers 2^k-2156046407643 is a prime.

It is a super-2 number, since 2×2156046407643² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2156046407592 and 2156046407601.

It is not an unprimeable number, because it can be changed into a prime (2156046407843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35693755 + ... + 35754107.

It is an arithmetic number, because the mean of its divisors is an integer number (91701384768).

Almost surely, 2^{2156046407643} is an apocalyptic number.

2156046407643 is a deficient number, since it is larger than the sum of its proper divisors (778397904933).

2156046407643 is a wasteful number, since it uses less digits than its factorization.

2156046407643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61443.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 2156046407643 in words is "two trillion, one hundred fifty-six billion, forty-six million, four hundred seven thousand, six hundred forty-three".