564155505551465 has 4 divisors (see below), whose sum is σ = 676986606661764. Its totient is φ = 451324404441168.

The previous prime is 564155505551453. The next prime is 564155505551501.

564155505551465 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100652842042921 + 463502663508544 = 10032589^2 + 21529112^2 .

It is a cyclic number.

It is not a de Polignac number, because 564155505551465 - 2²⁴ = 564155488774249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 564155505551398 and 564155505551407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56415550555142 + ... + 56415550555151.

It is an arithmetic number, because the mean of its divisors is an integer number (169246651665441).

Almost surely, 2^{564155505551465} is an apocalyptic number.

It is an amenable number.

564155505551465 is a deficient number, since it is larger than the sum of its proper divisors (112831101110299).

564155505551465 is a wasteful number, since it uses less digits than its factorization.

564155505551465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112831101110298.

The product of its (nonzero) digits is 225000000, while the sum is 62.

The spelling of 564155505551465 in words is "five hundred sixty-four trillion, one hundred fifty-five billion, five hundred five million, five hundred fifty-one thousand, four hundred sixty-five".