649911415386 has 64 divisors (see below), whose sum is σ = 1380158172288. Its totient is φ = 203320516608.

The previous prime is 649911415381. The next prime is 649911415399. The reversal of 649911415386 is 683514119946.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (649911415381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55939050 + ... + 55950666.

It is an arithmetic number, because the mean of its divisors is an integer number (21564971442).

Almost surely, 2^649911415386 is an apocalyptic number.

649911415386 is an abundant number, since it is smaller than the sum of its proper divisors (730246756902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649911415386 is a wasteful number, since it uses less digits than its factorization.

649911415386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13135.

The product of its digits is 5598720, while the sum is 57.

The spelling of 649911415386 in words is "six hundred forty-nine billion, nine hundred eleven million, four hundred fifteen thousand, three hundred eighty-six".