56405644650465 has 128 divisors (see below), whose sum is σ = 103247806090752. Its totient is φ = 26052949278720.

The previous prime is 56405644650419. The next prime is 56405644650493.

56405644650465 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56405644650465 - 2¹¹ = 56405644648417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56405644650399 and 56405644650408.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 60594189 + ... + 61518021.

It is an arithmetic number, because the mean of its divisors is an integer number (806623485084).

Almost surely, 2^{56405644650465} is an apocalyptic number.

56405644650465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56405644650465 is a deficient number, since it is larger than the sum of its proper divisors (46842161440287).

56405644650465 is a wasteful number, since it uses less digits than its factorization.

56405644650465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924099.

The product of its (nonzero) digits is 207360000, while the sum is 60.

The spelling of 56405644650465 in words is "fifty-six trillion, four hundred five billion, six hundred forty-four million, six hundred fifty thousand, four hundred sixty-five".