461626081893 has 24 divisors (see below), whose sum is σ = 668037273176. Its totient is φ = 307176883200.

The previous prime is 461626081879. The next prime is 461626081897. The reversal of 461626081893 is 398180626164.

461626081893 is a `hidden beast` number, since 4 + 6 + 1 + 626 + 0 + 8 + 1 + 8 + 9 + 3 = 666.

461626081893 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 178880781249 + 282745300644 = 422943^2 + 531738^2 .

It is not a de Polignac number, because 461626081893 - 2⁴ = 461626081877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461626081897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19125873 + ... + 19149993.

Almost surely, 2^461626081893 is an apocalyptic number.

It is an amenable number.

461626081893 is a deficient number, since it is larger than the sum of its proper divisors (206411191283).

461626081893 is a wasteful number, since it uses less digits than its factorization.

461626081893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28005 (or 28002 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 461626081893 in words is "four hundred sixty-one billion, six hundred twenty-six million, eighty-one thousand, eight hundred ninety-three".