461626562643220 has 48 divisors (see below), whose sum is σ = 1046270660310288. Its totient is φ = 170073762001920.

The previous prime is 461626562643179. The next prime is 461626562643223. The reversal of 461626562643220 is 22346265626164.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14185784025604 + 447440778617616 = 3766402^2 + 21152796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461626562643223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942426891 + ... + 1942664530.

It is an arithmetic number, because the mean of its divisors is an integer number (21797305423131).

Almost surely, 2^{461626562643220} is an apocalyptic number.

It is an amenable number.

461626562643220 is an abundant number, since it is smaller than the sum of its proper divisors (584644097667068).

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

461626562643220 is a wasteful number, since it uses less digits than its factorization.

461626562643220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885091900 (or 3885091898 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 55.

The spelling of 461626562643220 in words is "four hundred sixty-one trillion, six hundred twenty-six billion, five hundred sixty-two million, six hundred forty-three thousand, two hundred twenty".