47569997979 has 32 divisors (see below), whose sum is σ = 81339271680. Its totient is φ = 26913708000.

The previous prime is 47569997933. The next prime is 47569997983. The reversal of 47569997979 is 97979996574.

47569997979 is a `hidden beast` number, since 47 + 569 + 9 + 9 + 7 + 9 + 7 + 9 = 666.

It is not a de Polignac number, because 47569997979 - 2⁸ = 47569997723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47569997898 and 47569997907.

It is not an unprimeable number, because it can be changed into a prime (47569997479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1226917 + ... + 1265094.

It is an arithmetic number, because the mean of its divisors is an integer number (2541852240).

Almost surely, 2^47569997979 is an apocalyptic number.

47569997979 is a deficient number, since it is larger than the sum of its proper divisors (33769273701).

47569997979 is a wasteful number, since it uses less digits than its factorization.

47569997979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492128 (or 2492122 counting only the distinct ones).

The product of its digits is 2430456840, while the sum is 81.

The spelling of 47569997979 in words is "forty-seven billion, five hundred sixty-nine million, nine hundred ninety-seven thousand, nine hundred seventy-nine".