621438700311 has 48 divisors (see below), whose sum is σ = 1080283774752. Its totient is φ = 339178521600.

The previous prime is 621438700301. The next prime is 621438700349. The reversal of 621438700311 is 113007834126.

It is a happy number.

It is not a de Polignac number, because 621438700311 - 2¹⁵ = 621438667543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621438700301) 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, 5835750 + ... + 5941283.

It is an arithmetic number, because the mean of its divisors is an integer number (22505911974).

Almost surely, 2^621438700311 is an apocalyptic number.

621438700311 is a deficient number, since it is larger than the sum of its proper divisors (458845074441).

621438700311 is a wasteful number, since it uses less digits than its factorization.

621438700311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11777104 (or 11777101 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 621438700311 in words is "six hundred twenty-one billion, four hundred thirty-eight million, seven hundred thousand, three hundred eleven".