646246214580 has 24 divisors (see below), whose sum is σ = 1809489400992. Its totient is φ = 172332323872.

The previous prime is 646246214501. The next prime is 646246214609. The reversal of 646246214580 is 85412642646.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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, 5385385062 + ... + 5385385181.

It is an arithmetic number, because the mean of its divisors is an integer number (75395391708).

Almost surely, 2^646246214580 is an apocalyptic number.

646246214580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

646246214580 is an abundant number, since it is smaller than the sum of its proper divisors (1163243186412).

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

646246214580 is a wasteful number, since it uses less digits than its factorization.

646246214580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10770770255 (or 10770770253 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 646246214580 in words is "six hundred forty-six billion, two hundred forty-six million, two hundred fourteen thousand, five hundred eighty".