2656472797439 has 4 divisors (see below), whose sum is σ = 2656512619320. Its totient is φ = 2656432975560.

The previous prime is 2656472797411. The next prime is 2656472797469. The reversal of 2656472797439 is 9347972746562.

2656472797439 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2656472797439 - 2²⁴ = 2656456020223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656472797469) 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, 19810709 + ... + 19944350.

It is an arithmetic number, because the mean of its divisors is an integer number (664128154830).

Almost surely, 2^{2656472797439} is an apocalyptic number.

2656472797439 is a deficient number, since it is larger than the sum of its proper divisors (39821881).

2656472797439 is an equidigital number, since it uses as much as digits as its factorization.

2656472797439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39821880.

The product of its digits is 960180480, while the sum is 71.

The spelling of 2656472797439 in words is "two trillion, six hundred fifty-six billion, four hundred seventy-two million, seven hundred ninety-seven thousand, four hundred thirty-nine".