461731871621 has 8 divisors (see below), whose sum is σ = 462672285024. Its totient is φ = 460791678960.

The previous prime is 461731871617. The next prime is 461731871681. The reversal of 461731871621 is 126178137164.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 461731871621 - 2² = 461731871617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461731871681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4515755 + ... + 4616871.

It is an arithmetic number, because the mean of its divisors is an integer number (57834035628).

Almost surely, 2^461731871621 is an apocalyptic number.

It is an amenable number.

461731871621 is a deficient number, since it is larger than the sum of its proper divisors (940413403).

461731871621 is a wasteful number, since it uses less digits than its factorization.

461731871621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110371.

The product of its digits is 338688, while the sum is 47.

The spelling of 461731871621 in words is "four hundred sixty-one billion, seven hundred thirty-one million, eight hundred seventy-one thousand, six hundred twenty-one".