47865816558 has 48 divisors (see below), whose sum is σ = 118906085376. Its totient is φ = 13631962320.

The previous prime is 47865816547. The next prime is 47865816599. The reversal of 47865816558 is 85561856874.

47865816558 is a `hidden beast` number, since 4 + 7 + 8 + 65 + 8 + 16 + 558 = 666.

47865816558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47865816558² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 47865816495 and 47865816504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571566 + ... + 649937.

It is an arithmetic number, because the mean of its divisors is an integer number (2477210112).

Almost surely, 2^47865816558 is an apocalyptic number.

47865816558 is an abundant number, since it is smaller than the sum of its proper divisors (71040268818).

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

47865816558 is a wasteful number, since it uses less digits than its factorization.

47865816558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221829 (or 1221826 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 63.

The spelling of 47865816558 in words is "forty-seven billion, eight hundred sixty-five million, eight hundred sixteen thousand, five hundred fifty-eight".