47899578492 has 18 divisors (see below), whose sum is σ = 121079490168. Its totient is φ = 15966526152.

The previous prime is 47899578409. The next prime is 47899578497. The reversal of 47899578492 is 29487599874.

47899578492 is a `hidden beast` number, since 4 + 7 + 8 + 9 + 9 + 578 + 49 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×47899578492² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47899578492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47899578497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665271888 + ... + 665271959.

Almost surely, 2^47899578492 is an apocalyptic number.

It is an amenable number.

47899578492 is an abundant number, since it is smaller than the sum of its proper divisors (73179911676).

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

47899578492 is a wasteful number, since it uses less digits than its factorization.

47899578492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330543857 (or 1330543852 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 72.

The spelling of 47899578492 in words is "forty-seven billion, eight hundred ninety-nine million, five hundred seventy-eight thousand, four hundred ninety-two".