649295008950 has 144 divisors (see below), whose sum is σ = 1887451498944. Its totient is φ = 147277166400.

The previous prime is 649295008933. The next prime is 649295008987. The reversal of 649295008950 is 59800592946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 625677 + ... + 1300023.

It is an arithmetic number, because the mean of its divisors is an integer number (13107302076).

Almost surely, 2^649295008950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649295008950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943725749472).

649295008950 is an abundant number, since it is smaller than the sum of its proper divisors (1238156489994).

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

649295008950 is a wasteful number, since it uses less digits than its factorization.

649295008950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674507 (or 674495 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 649295008950 in words is "six hundred forty-nine billion, two hundred ninety-five million, eight thousand, nine hundred fifty".