749683639961 has 4 divisors (see below), whose sum is σ = 749744154624. Its totient is φ = 749623125300.

The previous prime is 749683639951. The next prime is 749683639979. The reversal of 749683639961 is 169936386947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 749683639961 - 2³⁴ = 732503770777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749683639951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30238745 + ... + 30263526.

It is an arithmetic number, because the mean of its divisors is an integer number (187436038656).

Almost surely, 2^749683639961 is an apocalyptic number.

It is an amenable number.

749683639961 is a deficient number, since it is larger than the sum of its proper divisors (60514663).

749683639961 is a wasteful number, since it uses less digits than its factorization.

749683639961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60514662.

The product of its digits is 317447424, while the sum is 71.

The spelling of 749683639961 in words is "seven hundred forty-nine billion, six hundred eighty-three million, six hundred thirty-nine thousand, nine hundred sixty-one".