650975990643 has 48 divisors (see below), whose sum is σ = 1072111023360. Its totient is φ = 376766913600.

The previous prime is 650975990563. The next prime is 650975990659. The reversal of 650975990643 is 346099579056.

650975990643 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 650975990643 - 2¹³ = 650975982451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650975990663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1178533 + ... + 1640393.

It is an arithmetic number, because the mean of its divisors is an integer number (22335646320).

Almost surely, 2^650975990643 is an apocalyptic number.

650975990643 is a deficient number, since it is larger than the sum of its proper divisors (421135032717).

650975990643 is a wasteful number, since it uses less digits than its factorization.

650975990643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462520 (or 462517 counting only the distinct ones).

The product of its (nonzero) digits is 55112400, while the sum is 63.

The spelling of 650975990643 in words is "six hundred fifty billion, nine hundred seventy-five million, nine hundred ninety thousand, six hundred forty-three".