56486479669 has 2 divisors, whose sum is σ = 56486479670. Its totient is φ = 56486479668.

The previous prime is 56486479661. The next prime is 56486479783. The reversal of 56486479669 is 96697468465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41580511569 + 14905968100 = 203913^2 + 122090^2 .

It is a cyclic number.

It is not a de Polignac number, because 56486479669 - 2³ = 56486479661 is a prime.

It is a super-2 number, since 2×56486479669² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56486479598 and 56486479607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56486479661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28243239834 + 28243239835.

It is an arithmetic number, because the mean of its divisors is an integer number (28243239835).

Almost surely, 2^56486479669 is an apocalyptic number.

It is an amenable number.

56486479669 is a deficient number, since it is larger than the sum of its proper divisors (1).

56486479669 is an equidigital number, since it uses as much as digits as its factorization.

56486479669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470292480, while the sum is 70.

The spelling of 56486479669 in words is "fifty-six billion, four hundred eighty-six million, four hundred seventy-nine thousand, six hundred sixty-nine".