649718559098 has 32 divisors (see below), whose sum is σ = 1121232236544. Its totient is φ = 276595825392.

The previous prime is 649718559089. The next prime is 649718559137. The reversal of 649718559098 is 890955817946.

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, 3383165 + ... + 3570047.

It is an arithmetic number, because the mean of its divisors is an integer number (35038507392).

Almost surely, 2^649718559098 is an apocalyptic number.

649718559098 is a deficient number, since it is larger than the sum of its proper divisors (471513677446).

649718559098 is a wasteful number, since it uses less digits than its factorization.

649718559098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188546.

The product of its (nonzero) digits is 195955200, while the sum is 71.

The spelling of 649718559098 in words is "six hundred forty-nine billion, seven hundred eighteen million, five hundred fifty-nine thousand, ninety-eight".