49682646865 has 4 divisors (see below), whose sum is σ = 59619176244. Its totient is φ = 39746117488.

The previous prime is 49682646859. The next prime is 49682646883. The reversal of 49682646865 is 56864628694.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8171436816 + 41511210049 = 90396^2 + 203743^2 .

It is a cyclic number.

It is not a de Polignac number, because 49682646865 - 2³ = 49682646857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49682646797 and 49682646806.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4968264682 + ... + 4968264691.

It is an arithmetic number, because the mean of its divisors is an integer number (14904794061).

Almost surely, 2^49682646865 is an apocalyptic number.

It is an amenable number.

49682646865 is a deficient number, since it is larger than the sum of its proper divisors (9936529379).

49682646865 is an equidigital number, since it uses as much as digits as its factorization.

49682646865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9936529378.

The product of its digits is 119439360, while the sum is 64.

The spelling of 49682646865 in words is "forty-nine billion, six hundred eighty-two million, six hundred forty-six thousand, eight hundred sixty-five".