641451312120 has 32 divisors (see below), whose sum is σ = 1924353936720. Its totient is φ = 171053683200.

The previous prime is 641451312097. The next prime is 641451312149. The reversal of 641451312120 is 21213154146.

It is a super-2 number, since 2×641451312120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2672713681 + ... + 2672713920.

Almost surely, 2^641451312120 is an apocalyptic number.

641451312120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641451312120 is an abundant number, since it is smaller than the sum of its proper divisors (1282902624600).

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

641451312120 is a wasteful number, since it uses less digits than its factorization.

641451312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345427615 (or 5345427611 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 641451312120 its reverse (21213154146), we get a palindrome (662664466266).

The spelling of 641451312120 in words is "six hundred forty-one billion, four hundred fifty-one million, three hundred twelve thousand, one hundred twenty".