461723907491 has 64 divisors (see below), whose sum is σ = 608864256000. Its totient is φ = 339216232320.

The previous prime is 461723907461. The next prime is 461723907521. The reversal of 461723907491 is 194709327164.

It is an interprime number because it is at equal distance from previous prime (461723907461) and next prime (461723907521).

It is not a de Polignac number, because 461723907491 - 2¹⁸ = 461723645347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461723907461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 477480290 + ... + 477481256.

It is an arithmetic number, because the mean of its divisors is an integer number (9513504000).

Almost surely, 2^461723907491 is an apocalyptic number.

461723907491 is a deficient number, since it is larger than the sum of its proper divisors (147140348509).

461723907491 is a wasteful number, since it uses less digits than its factorization.

461723907491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 461723907491 in words is "four hundred sixty-one billion, seven hundred twenty-three million, nine hundred seven thousand, four hundred ninety-one".