650961768445 has 4 divisors (see below), whose sum is σ = 781154122140. Its totient is φ = 520769414752.

The previous prime is 650961768437. The next prime is 650961768451. The reversal of 650961768445 is 544867169056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68226484804 + 582735283641 = 261202^2 + 763371^2 .

It is a cyclic number.

It is not a de Polignac number, because 650961768445 - 2³ = 650961768437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65096176840 + ... + 65096176849.

It is an arithmetic number, because the mean of its divisors is an integer number (195288530535).

Almost surely, 2^650961768445 is an apocalyptic number.

It is an amenable number.

650961768445 is a deficient number, since it is larger than the sum of its proper divisors (130192353695).

650961768445 is a wasteful number, since it uses less digits than its factorization.

650961768445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130192353694.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 650961768445 in words is "six hundred fifty billion, nine hundred sixty-one million, seven hundred sixty-eight thousand, four hundred forty-five".