54517139847 has 6 divisors (see below), whose sum is σ = 78746979792. Its totient is φ = 36344759892.

The previous prime is 54517139839. The next prime is 54517139861. The reversal of 54517139847 is 74893171545.

54517139847 is a `hidden beast` number, since 5 + 45 + 171 + 398 + 47 = 666.

54517139847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54517139847 - 2³ = 54517139839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54517139793 and 54517139802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54517131847) 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, 3028729983 + ... + 3028730000.

It is an arithmetic number, because the mean of its divisors is an integer number (13124496632).

Almost surely, 2^54517139847 is an apocalyptic number.

54517139847 is a deficient number, since it is larger than the sum of its proper divisors (24229839945).

54517139847 is a wasteful number, since it uses less digits than its factorization.

54517139847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057459989 (or 6057459986 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 54517139847 in words is "fifty-four billion, five hundred seventeen million, one hundred thirty-nine thousand, eight hundred forty-seven".