621432244052 has 12 divisors (see below), whose sum is σ = 1096069470720. Its totient is φ = 308269538136.

The previous prime is 621432244049. The next prime is 621432244067. The reversal of 621432244052 is 250442234126.

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, 611645402 + ... + 611646417.

It is an arithmetic number, because the mean of its divisors is an integer number (91339122560).

Almost surely, 2^621432244052 is an apocalyptic number.

It is an amenable number.

621432244052 is a deficient number, since it is larger than the sum of its proper divisors (474637226668).

621432244052 is a wasteful number, since it uses less digits than its factorization.

621432244052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223291950 (or 1223291948 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 621432244052 its reverse (250442234126), we get a palindrome (871874478178).

The spelling of 621432244052 in words is "six hundred twenty-one billion, four hundred thirty-two million, two hundred forty-four thousand, fifty-two".