53499479139 has 12 divisors (see below), whose sum is σ = 77841093096. Its totient is φ = 35405980512.

The previous prime is 53499479087. The next prime is 53499479149. The reversal of 53499479139 is 93197499435.

53499479139 is a `hidden beast` number, since 5 + 3 + 499 + 4 + 7 + 9 + 139 = 666.

It is not a de Polignac number, because 53499479139 - 2⁸ = 53499478883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53499479149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21693609 + ... + 21696074.

It is an arithmetic number, because the mean of its divisors is an integer number (6486757758).

Almost surely, 2^53499479139 is an apocalyptic number.

53499479139 is a deficient number, since it is larger than the sum of its proper divisors (24341613957).

53499479139 is a wasteful number, since it uses less digits than its factorization.

53499479139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43389826 (or 43389823 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The spelling of 53499479139 in words is "fifty-three billion, four hundred ninety-nine million, four hundred seventy-nine thousand, one hundred thirty-nine".