649609526955 has 16 divisors (see below), whose sum is σ = 1100514963744. Its totient is φ = 326078507520.

The previous prime is 649609526893. The next prime is 649609526983. The reversal of 649609526955 is 559625906946.

It is a happy number.

It is not a de Polignac number, because 649609526955 - 2⁹ = 649609526443 is a prime.

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, 1273743916 + ... + 1273744425.

It is an arithmetic number, because the mean of its divisors is an integer number (68782185234).

Almost surely, 2^649609526955 is an apocalyptic number.

649609526955 is a deficient number, since it is larger than the sum of its proper divisors (450905436789).

649609526955 is a wasteful number, since it uses less digits than its factorization.

649609526955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547488366.

The product of its (nonzero) digits is 157464000, while the sum is 66.

The spelling of 649609526955 in words is "six hundred forty-nine billion, six hundred nine million, five hundred twenty-six thousand, nine hundred fifty-five".