2156246426441 has 4 divisors (see below), whose sum is σ = 2171758990800. Its totient is φ = 2140733862084.

The previous prime is 2156246426431. The next prime is 2156246426471. The reversal of 2156246426441 is 1446246426512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156246426441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156246426431) 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, 7756281971 + ... + 7756282248.

It is an arithmetic number, because the mean of its divisors is an integer number (542939747700).

Almost surely, 2^{2156246426441} is an apocalyptic number.

It is an amenable number.

2156246426441 is a deficient number, since it is larger than the sum of its proper divisors (15512564359).

2156246426441 is a wasteful number, since it uses less digits than its factorization.

2156246426441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15512564358.

The product of its digits is 2211840, while the sum is 47.

The spelling of 2156246426441 in words is "two trillion, one hundred fifty-six billion, two hundred forty-six million, four hundred twenty-six thousand, four hundred forty-one".