561181764363 has 16 divisors (see below), whose sum is σ = 816388733952. Its totient is φ = 340058348000.

The previous prime is 561181764337. The next prime is 561181764373. The reversal of 561181764363 is 363467181165.

It is a cyclic number.

It is not a de Polignac number, because 561181764363 - 2⁵ = 561181764331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561181764313) 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, 1074843 + ... + 1509188.

It is an arithmetic number, because the mean of its divisors is an integer number (51024295872).

Almost surely, 2^561181764363 is an apocalyptic number.

561181764363 is a deficient number, since it is larger than the sum of its proper divisors (255206969589).

561181764363 is a wasteful number, since it uses less digits than its factorization.

561181764363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590626.

The product of its digits is 2177280, while the sum is 51.

The spelling of 561181764363 in words is "five hundred sixty-one billion, one hundred eighty-one million, seven hundred sixty-four thousand, three hundred sixty-three".