641253462420 has 48 divisors (see below), whose sum is σ = 1844036990208. Its totient is φ = 166379276160.

The previous prime is 641253462407. The next prime is 641253462463. The reversal of 641253462420 is 24264352146.

It is a happy number.

641253462420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641253462420² (a number of 24 digits) contains 22 as substring.

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, 144424236 + ... + 144428675.

It is an arithmetic number, because the mean of its divisors is an integer number (38417437296).

Almost surely, 2^641253462420 is an apocalyptic number.

641253462420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641253462420 is an abundant number, since it is smaller than the sum of its proper divisors (1202783527788).

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

641253462420 is a wasteful number, since it uses less digits than its factorization.

641253462420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288852960 (or 288852958 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 641253462420 in words is "six hundred forty-one billion, two hundred fifty-three million, four hundred sixty-two thousand, four hundred twenty".