641379336192 has 756 divisors, whose sum is σ = 2299903558680. Its totient is φ = 171228266496.

The previous prime is 641379336181. The next prime is 641379336193. The reversal of 641379336192 is 291633973146.

641379336192 is a `hidden beast` number, since 6 + 4 + 13 + 7 + 9 + 3 + 3 + 619 + 2 = 666.

It is a super-2 number, since 2×641379336192² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641379336193) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8786018268 + ... + 8786018340.

Almost surely, 2^641379336192 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 641379336192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149951779340).

641379336192 is an abundant number, since it is smaller than the sum of its proper divisors (1658524222488).

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

641379336192 is an frugal number, since it uses more digits than its factorization.

641379336192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 104 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The spelling of 641379336192 in words is "six hundred forty-one billion, three hundred seventy-nine million, three hundred thirty-six thousand, one hundred ninety-two".