477721821164 has 24 divisors (see below), whose sum is σ = 981266445600. Its totient is φ = 199204465536.

The previous prime is 477721821133. The next prime is 477721821169. The reversal of 477721821164 is 461128127774.

It is not an unprimeable number, because it can be changed into a prime (477721821169) 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, 230559689 + ... + 230561760.

It is an arithmetic number, because the mean of its divisors is an integer number (40886101900).

Almost surely, 2^477721821164 is an apocalyptic number.

It is an amenable number.

477721821164 is an abundant number, since it is smaller than the sum of its proper divisors (503544624436).

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

477721821164 is a wasteful number, since it uses less digits than its factorization.

477721821164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461121497 (or 461121495 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 50.

The spelling of 477721821164 in words is "four hundred seventy-seven billion, seven hundred twenty-one million, eight hundred twenty-one thousand, one hundred sixty-four".