461779099561 has 16 divisors (see below), whose sum is σ = 510663985216. Its totient is φ = 414873337536.

The previous prime is 461779099517. The next prime is 461779099687. The reversal of 461779099561 is 165990977164.

It is not a de Polignac number, because 461779099561 - 2¹⁷ = 461778968489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 461779099493 and 461779099502.

It is not an unprimeable number, because it can be changed into a prime (461779090561) 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, 1301310 + ... + 1617703.

It is an arithmetic number, because the mean of its divisors is an integer number (31916499076).

Almost surely, 2^461779099561 is an apocalyptic number.

It is an amenable number.

461779099561 is a deficient number, since it is larger than the sum of its proper divisors (48884885655).

461779099561 is a wasteful number, since it uses less digits than its factorization.

461779099561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919352.

The product of its (nonzero) digits is 25719120, while the sum is 64.

The spelling of 461779099561 in words is "four hundred sixty-one billion, seven hundred seventy-nine million, ninety-nine thousand, five hundred sixty-one".