49439386765 has 16 divisors (see below), whose sum is σ = 62830700928. Its totient is φ = 37267217856.

The previous prime is 49439386751. The next prime is 49439386771. The reversal of 49439386765 is 56768393494.

It is a cyclic number.

It is not a de Polignac number, because 49439386765 - 2⁷ = 49439386637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49439386697 and 49439386706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3200562 + ... + 3215971.

It is an arithmetic number, because the mean of its divisors is an integer number (3926918808).

Almost surely, 2^49439386765 is an apocalyptic number.

It is an amenable number.

49439386765 is a deficient number, since it is larger than the sum of its proper divisors (13391314163).

49439386765 is a wasteful number, since it uses less digits than its factorization.

49439386765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416628.

The product of its digits is 117573120, while the sum is 64.

The spelling of 49439386765 in words is "forty-nine billion, four hundred thirty-nine million, three hundred eighty-six thousand, seven hundred sixty-five".