575264377661 has 4 divisors (see below), whose sum is σ = 575284401024. Its totient is φ = 575244354300.

The previous prime is 575264377643. The next prime is 575264377729. The reversal of 575264377661 is 166773462575.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-575264377661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 575264377661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575264377621) 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, 9968525 + ... + 10026066.

It is an arithmetic number, because the mean of its divisors is an integer number (143821100256).

Almost surely, 2^575264377661 is an apocalyptic number.

It is an amenable number.

575264377661 is a deficient number, since it is larger than the sum of its proper divisors (20023363).

575264377661 is a wasteful number, since it uses less digits than its factorization.

575264377661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023362.

The product of its digits is 44452800, while the sum is 59.

The spelling of 575264377661 in words is "five hundred seventy-five billion, two hundred sixty-four million, three hundred seventy-seven thousand, six hundred sixty-one".