621304053040 has 60 divisors (see below), whose sum is σ = 1587791312352. Its totient is φ = 225928743040.

The previous prime is 621304052987. The next prime is 621304053101. The reversal of 621304053040 is 40350403126.

It is a super-2 number, since 2×621304053040² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32082472 + ... + 32101831.

Almost surely, 2^621304053040 is an apocalyptic number.

It is an amenable number.

621304053040 is an abundant number, since it is smaller than the sum of its proper divisors (966487259312).

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

621304053040 is a wasteful number, since it uses less digits than its factorization.

621304053040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64184338 (or 64184321 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 621304053040 its reverse (40350403126), we get a palindrome (661654456166).

The spelling of 621304053040 in words is "six hundred twenty-one billion, three hundred four million, fifty-three thousand, forty".