461936476891 has 4 divisors (see below), whose sum is σ = 461939034784. Its totient is φ = 461933919000.

The previous prime is 461936476873. The next prime is 461936476909. The reversal of 461936476891 is 198674639164.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (461936476873) and next prime (461936476909).

It is a cyclic number.

It is not a de Polignac number, because 461936476891 - 2⁷ = 461936476763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461936476591) 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, 985635 + ... + 1376716.

It is an arithmetic number, because the mean of its divisors is an integer number (115484758696).

Almost surely, 2^461936476891 is an apocalyptic number.

461936476891 is a deficient number, since it is larger than the sum of its proper divisors (2557893).

461936476891 is a wasteful number, since it uses less digits than its factorization.

461936476891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557892.

The product of its digits is 47029248, while the sum is 64.

The spelling of 461936476891 in words is "four hundred sixty-one billion, nine hundred thirty-six million, four hundred seventy-six thousand, eight hundred ninety-one".