56405650465 has 8 divisors (see below), whose sum is σ = 67693676328. Its totient is φ = 45119923200.

The previous prime is 56405650453. The next prime is 56405650471.

56405650465 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 16386048064 + 40019602401 = 128008^2 + 200049^2 .

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

It is not a de Polignac number, because 56405650465 - 2⁷ = 56405650337 is a prime.

It is a super-3 number, since 3×56405650465³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520192 + ... + 619201.

It is an arithmetic number, because the mean of its divisors is an integer number (8461709541).

Almost surely, 2^56405650465 is an apocalyptic number.

It is an amenable number.

56405650465 is a deficient number, since it is larger than the sum of its proper divisors (11288025863).

56405650465 is a wasteful number, since it uses less digits than its factorization.

56405650465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149299.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 56405650465 in words is "fifty-six billion, four hundred five million, six hundred fifty thousand, four hundred sixty-five".