6466400622420 has 24 divisors (see below), whose sum is σ = 18105921742944. Its totient is φ = 1724373499296.

The previous prime is 6466400622377. The next prime is 6466400622463. The reversal of 6466400622420 is 242260046646.

It is an interprime number because it is at equal distance from previous prime (6466400622377) and next prime (6466400622463).

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, 53886671794 + ... + 53886671913.

It is an arithmetic number, because the mean of its divisors is an integer number (754413405956).

Almost surely, 2^{6466400622420} is an apocalyptic number.

6466400622420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6466400622420 is an abundant number, since it is smaller than the sum of its proper divisors (11639521120524).

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

6466400622420 is a wasteful number, since it uses less digits than its factorization.

6466400622420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107773343719 (or 107773343717 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 6466400622420 in words is "six trillion, four hundred sixty-six billion, four hundred million, six hundred twenty-two thousand, four hundred twenty".