47173501820 has 12 divisors (see below), whose sum is σ = 99064353864. Its totient is φ = 18869400720.

The previous prime is 47173501813. The next prime is 47173501873. The reversal of 47173501820 is 2810537174.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179337526 + ... + 1179337565.

It is an arithmetic number, because the mean of its divisors is an integer number (8255362822).

Almost surely, 2^47173501820 is an apocalyptic number.

It is an amenable number.

47173501820 is an abundant number, since it is smaller than the sum of its proper divisors (51890852044).

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

47173501820 is a wasteful number, since it uses less digits than its factorization.

47173501820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358675100 (or 2358675098 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 47173501820 in words is "forty-seven billion, one hundred seventy-three million, five hundred one thousand, eight hundred twenty".