47157661832 has 12 divisors (see below), whose sum is σ = 88421767605. Its totient is φ = 23578523808.

The previous prime is 47157661813. The next prime is 47157661849. The reversal of 47157661832 is 23816675174.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 39643199236 + 7514462596 = 199106^2 + 86686^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=153554.

It is a super-2 number, since 2×47157661832² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 575828 + ... + 652604.

Almost surely, 2^47157661832 is an apocalyptic number.

It is an amenable number.

47157661832 is a deficient number, since it is larger than the sum of its proper divisors (41264105773).

47157661832 is an frugal number, since it uses more digits than its factorization.

47157661832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153560 (or 76779 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

Multiplying 47157661832 by its sum of digits (50), we get a square (2357883091600 = 1535540²).

The spelling of 47157661832 in words is "forty-seven billion, one hundred fifty-seven million, six hundred sixty-one thousand, eight hundred thirty-two".