56438052215 has 4 divisors (see below), whose sum is σ = 67725662664. Its totient is φ = 45150441768.

The previous prime is 56438052179. The next prime is 56438052217. The reversal of 56438052215 is 51225083465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51225083465 = 5 ⋅10245016693.

It is a cyclic number.

It is not a de Polignac number, because 56438052215 - 2²⁸ = 56169616759 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 (56438052217) 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, 5643805217 + ... + 5643805226.

It is an arithmetic number, because the mean of its divisors is an integer number (16931415666).

Almost surely, 2^56438052215 is an apocalyptic number.

56438052215 is a deficient number, since it is larger than the sum of its proper divisors (11287610449).

56438052215 is a wasteful number, since it uses less digits than its factorization.

56438052215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11287610448.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 56438052215 in words is "fifty-six billion, four hundred thirty-eight million, fifty-two thousand, two hundred fifteen".