56221763139 has 6 divisors (see below), whose sum is σ = 81209213436. Its totient is φ = 37481175420.

The previous prime is 56221763137. The next prime is 56221763159. The reversal of 56221763139 is 93136712265.

56221763139 is a `hidden beast` number, since 5 + 6 + 2 + 2 + 1 + 7 + 631 + 3 + 9 = 666.

It is not a de Polignac number, because 56221763139 - 2¹ = 56221763137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56221763094 and 56221763103.

It is not an unprimeable number, because it can be changed into a prime (56221763137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3123431277 + ... + 3123431294.

It is an arithmetic number, because the mean of its divisors is an integer number (13534868906).

Almost surely, 2^56221763139 is an apocalyptic number.

56221763139 is a deficient number, since it is larger than the sum of its proper divisors (24987450297).

56221763139 is a wasteful number, since it uses less digits than its factorization.

56221763139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246862577 (or 6246862574 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 56221763139 in words is "fifty-six billion, two hundred twenty-one million, seven hundred sixty-three thousand, one hundred thirty-nine".