641453146644 has 24 divisors (see below), whose sum is σ = 1496748816640. Its totient is φ = 213814171584.

The previous prime is 641453146637. The next prime is 641453146699. The reversal of 641453146644 is 446641354146.

It is a super-2 number, since 2×641453146644² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641453146593 and 641453146602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370992 + ... + 1191864.

Almost surely, 2^641453146644 is an apocalyptic number.

It is an amenable number.

641453146644 is an abundant number, since it is smaller than the sum of its proper divisors (855295669996).

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

641453146644 is a wasteful number, since it uses less digits than its factorization.

641453146644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885999 (or 885997 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 48.

The spelling of 641453146644 in words is "six hundred forty-one billion, four hundred fifty-three million, one hundred forty-six thousand, six hundred forty-four".