561762655977 has 16 divisors (see below), whose sum is σ = 759323116800. Its totient is φ = 369355934592.

The previous prime is 561762655957. The next prime is 561762656011. The reversal of 561762655977 is 779556267165.

It is not a de Polignac number, because 561762655977 - 2¹⁰ = 561762654953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561762655957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4075024 + ... + 4210622.

It is an arithmetic number, because the mean of its divisors is an integer number (47457694800).

Almost surely, 2^561762655977 is an apocalyptic number.

It is an amenable number.

561762655977 is a deficient number, since it is larger than the sum of its proper divisors (197560460823).

561762655977 is a wasteful number, since it uses less digits than its factorization.

561762655977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154592.

The product of its digits is 166698000, while the sum is 66.

The spelling of 561762655977 in words is "five hundred sixty-one billion, seven hundred sixty-two million, six hundred fifty-five thousand, nine hundred seventy-seven".