621995674071 has 16 divisors (see below), whose sum is σ = 875108724480. Its totient is φ = 392178346560.

The previous prime is 621995674061. The next prime is 621995674109. The reversal of 621995674071 is 170476599126.

It is a happy number.

621995674071 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 621995674071 - 2¹⁸ = 621995411927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621995674061) 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, 50636725 + ... + 50649006.

It is an arithmetic number, because the mean of its divisors is an integer number (54694295280).

Almost surely, 2^621995674071 is an apocalyptic number.

621995674071 is a deficient number, since it is larger than the sum of its proper divisors (253113050409).

621995674071 is a wasteful number, since it uses less digits than its factorization.

621995674071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101285846.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 621995674071 in words is "six hundred twenty-one billion, nine hundred ninety-five million, six hundred seventy-four thousand, seventy-one".