621343210439 has 16 divisors (see below), whose sum is σ = 764883333120. Its totient is φ = 492991202880.

The previous prime is 621343210399. The next prime is 621343210441. The reversal of 621343210439 is 934012343126.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621343210439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621343210139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62241374 + ... + 62251355.

It is an arithmetic number, because the mean of its divisors is an integer number (47805208320).

Almost surely, 2^621343210439 is an apocalyptic number.

621343210439 is a deficient number, since it is larger than the sum of its proper divisors (143540122681).

621343210439 is a wasteful number, since it uses less digits than its factorization.

621343210439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124492790.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 621343210439 in words is "six hundred twenty-one billion, three hundred forty-three million, two hundred ten thousand, four hundred thirty-nine".