47165957920 has 48 divisors (see below), whose sum is σ = 111629839608. Its totient is φ = 18832476160.

The previous prime is 47165957873. The next prime is 47165958001. The reversal of 47165957920 is 2975956174.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18131161104 + 29034796816 = 134652^2 + 170396^2 .

It is a super-2 number, since 2×47165957920² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175501 + ... + 353740.

Almost surely, 2^47165957920 is an apocalyptic number.

47165957920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47165957920 is an abundant number, since it is smaller than the sum of its proper divisors (64463881688).

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

47165957920 is a wasteful number, since it uses less digits than its factorization.

47165957920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529813 (or 529805 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 47165957920 in words is "forty-seven billion, one hundred sixty-five million, nine hundred fifty-seven thousand, nine hundred twenty".