461307221868 has 54 divisors (see below), whose sum is σ = 1089107979204. Its totient is φ = 151972315968.

The previous prime is 461307221867. The next prime is 461307221897. The reversal of 461307221868 is 868122703164.

It is not an unprimeable number, because it can be changed into a prime (461307221867) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 209398455 + ... + 209400657.

Almost surely, 2^461307221868 is an apocalyptic number.

It is an amenable number.

461307221868 is an abundant number, since it is smaller than the sum of its proper divisors (627800757336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

461307221868 is an frugal number, since it uses more digits than its factorization.

461307221868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

Multiplying 461307221868 by its sum of digits (48), we get a square (22142746649664 = 4705608²).

The spelling of 461307221868 in words is "four hundred sixty-one billion, three hundred seven million, two hundred twenty-one thousand, eight hundred sixty-eight".