641086783488 has 552 divisors, whose sum is σ = 2088561816432. Its totient is φ = 195689447424.

The previous prime is 641086783457. The next prime is 641086783489. The reversal of 641086783488 is 884387680146.

641086783488 is a `hidden beast` number, since 6 + 4 + 1 + 0 + 86 + 78 + 3 + 488 = 666.

It is a super-2 number, since 2×641086783488² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641086783489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17326669806 + ... + 17326669842.

Almost surely, 2^641086783488 is an apocalyptic number.

641086783488 is a gapful number since it is divisible by the number (68) 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 641086783488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044280908216).

641086783488 is an abundant number, since it is smaller than the sum of its proper divisors (1447475032944).

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

641086783488 is an frugal number, since it uses more digits than its factorization.

641086783488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 63.

The spelling of 641086783488 in words is "six hundred forty-one billion, eighty-six million, seven hundred eighty-three thousand, four hundred eighty-eight".