56511464259 has 4 divisors (see below), whose sum is σ = 75348619016. Its totient is φ = 37674309504.

The previous prime is 56511464221. The next prime is 56511464281. The reversal of 56511464259 is 95246411565.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56511464259 - 2¹¹ = 56511462211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56511464059) 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, 9418577374 + ... + 9418577379.

It is an arithmetic number, because the mean of its divisors is an integer number (18837154754).

Almost surely, 2^56511464259 is an apocalyptic number.

56511464259 is a deficient number, since it is larger than the sum of its proper divisors (18837154757).

56511464259 is a wasteful number, since it uses less digits than its factorization.

56511464259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18837154756.

The product of its digits is 1296000, while the sum is 48.

The spelling of 56511464259 in words is "fifty-six billion, five hundred eleven million, four hundred sixty-four thousand, two hundred fifty-nine".