641163285360 has 240 divisors, whose sum is σ = 2319955555008. Its totient is φ = 157751193600.

The previous prime is 641163285337. The next prime is 641163285421. The reversal of 641163285360 is 63582361146.

641163285360 is a `hidden beast` number, since 6 + 4 + 1 + 1 + 6 + 3 + 285 + 360 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×641163285360² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21616140 + ... + 21645780.

Almost surely, 2^641163285360 is an apocalyptic number.

641163285360 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 641163285360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159977777504).

641163285360 is an abundant number, since it is smaller than the sum of its proper divisors (1678792269648).

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

641163285360 is a wasteful number, since it uses less digits than its factorization.

641163285360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31984 (or 31975 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 641163285360 in words is "six hundred forty-one billion, one hundred sixty-three million, two hundred eighty-five thousand, three hundred sixty".