649753436079 has 56 divisors (see below), whose sum is σ = 1063627592400. Its totient is φ = 393463578240.

The previous prime is 649753436023. The next prime is 649753436089. The reversal of 649753436079 is 970634357946.

649753436079 is a `hidden beast` number, since 6 + 4 + 97 + 534 + 3 + 6 + 0 + 7 + 9 = 666.

It is not a de Polignac number, because 649753436079 - 2⁷ = 649753435951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649753436089) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9822387 + ... + 9888315.

Almost surely, 2^649753436079 is an apocalyptic number.

649753436079 is a deficient number, since it is larger than the sum of its proper divisors (413874156321).

649753436079 is a wasteful number, since it uses less digits than its factorization.

649753436079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67187 (or 67172 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 63.

The spelling of 649753436079 in words is "six hundred forty-nine billion, seven hundred fifty-three million, four hundred thirty-six thousand, seventy-nine".