621825481830 has 32 divisors (see below), whose sum is σ = 1705578465024. Its totient is φ = 142131538656.

The previous prime is 621825481813. The next prime is 621825481853. The reversal of 621825481830 is 38184528126.

It is a super-2 number, since 2×621825481830² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 621825481830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1480536652 + ... + 1480537071.

It is an arithmetic number, because the mean of its divisors is an integer number (53299327032).

Almost surely, 2^621825481830 is an apocalyptic number.

621825481830 is an abundant number, since it is smaller than the sum of its proper divisors (1083752983194).

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

621825481830 is a wasteful number, since it uses less digits than its factorization.

621825481830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961073740.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 621825481830 in words is "six hundred twenty-one billion, eight hundred twenty-five million, four hundred eighty-one thousand, eight hundred thirty".