621353496930940 has 96 divisors (see below), whose sum is σ = 1461416111729280. Its totient is φ = 220685744480256.

The previous prime is 621353496930877. The next prime is 621353496930949. The reversal of 621353496930940 is 49039694353126.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621353496930949) 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, 543654955 + ... + 544796674.

It is an arithmetic number, because the mean of its divisors is an integer number (15223084497180).

Almost surely, 2^{621353496930940} is an apocalyptic number.

It is an amenable number.

621353496930940 is an abundant number, since it is smaller than the sum of its proper divisors (840062614798340).

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

621353496930940 is a wasteful number, since it uses less digits than its factorization.

621353496930940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088451751 (or 1088451749 counting only the distinct ones).

The product of its (nonzero) digits is 113374080, while the sum is 64.

The spelling of 621353496930940 in words is "six hundred twenty-one trillion, three hundred fifty-three billion, four hundred ninety-six million, nine hundred thirty thousand, nine hundred forty".