2256939478379 has 8 divisors (see below), whose sum is σ = 2434789316160. Its totient is φ = 2084099495296.

The previous prime is 2256939478373. The next prime is 2256939478399. The reversal of 2256939478379 is 9738749396522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2256939478379 - 2³² = 2252644511083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256939478373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252462739 + ... + 1252464540.

It is an arithmetic number, because the mean of its divisors is an integer number (304348664520).

Almost surely, 2^{2256939478379} is an apocalyptic number.

2256939478379 is a deficient number, since it is larger than the sum of its proper divisors (177849837781).

2256939478379 is a wasteful number, since it uses less digits than its factorization.

2256939478379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504927349.

The product of its digits is 1234517760, while the sum is 74.

The spelling of 2256939478379 in words is "two trillion, two hundred fifty-six billion, nine hundred thirty-nine million, four hundred seventy-eight thousand, three hundred seventy-nine".