641327266048 has 216 divisors, whose sum is σ = 1607502818880. Its totient is φ = 253835366400.

The previous prime is 641327266043. The next prime is 641327266051. The reversal of 641327266048 is 840662723146.

It is a super-2 number, since 2×641327266048² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 641327265992 and 641327266010.

It is not an unprimeable number, because it can be changed into a prime (641327266043) 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, 8328523 + ... + 8405173.

It is an arithmetic number, because the mean of its divisors is an integer number (7442142680).

Almost surely, 2^641327266048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641327266048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803751409440).

641327266048 is an abundant number, since it is smaller than the sum of its proper divisors (966175552832).

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

641327266048 is a wasteful number, since it uses less digits than its factorization.

641327266048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76733 (or 76712 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 641327266048 in words is "six hundred forty-one billion, three hundred twenty-seven million, two hundred sixty-six thousand, forty-eight".