649770649935 has 16 divisors (see below), whose sum is σ = 1134145134720. Its totient is φ = 315040315040.

The previous prime is 649770649919. The next prime is 649770649961. The reversal of 649770649935 is 539946077946.

649770649935 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 649770649935 - 2⁴ = 649770649919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 649770649935.

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, 1969001805 + ... + 1969002134.

It is an arithmetic number, because the mean of its divisors is an integer number (70884070920).

Almost surely, 2^649770649935 is an apocalyptic number.

649770649935 is a deficient number, since it is larger than the sum of its proper divisors (484374484785).

649770649935 is a wasteful number, since it uses less digits than its factorization.

649770649935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938003958.

The product of its (nonzero) digits is 308629440, while the sum is 69.

The spelling of 649770649935 in words is "six hundred forty-nine billion, seven hundred seventy million, six hundred forty-nine thousand, nine hundred thirty-five".