646550092560 has 160 divisors (see below), whose sum is σ = 2120400000000. Its totient is φ = 162517943808.

The previous prime is 646550092553. The next prime is 646550092561. The reversal of 646550092560 is 65290055646.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (646550092561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 551191 + ... + 1263689.

It is an arithmetic number, because the mean of its divisors is an integer number (13252500000).

Almost surely, 2^646550092560 is an apocalyptic number.

646550092560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646550092560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060200000000).

646550092560 is an abundant number, since it is smaller than the sum of its proper divisors (1473849907440).

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

646550092560 is a wasteful number, since it uses less digits than its factorization.

646550092560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712733 (or 712727 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 646550092560 in words is "six hundred forty-six billion, five hundred fifty million, ninety-two thousand, five hundred sixty".