641451304653 has 32 divisors (see below), whose sum is σ = 875178487296. Its totient is φ = 417715834368.

The previous prime is 641451304651. The next prime is 641451304667. The reversal of 641451304653 is 356403154146.

It is a happy number.

It is not a de Polignac number, because 641451304653 - 2¹ = 641451304651 is a prime.

It is a super-2 number, since 2×641451304653² (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 (641451304651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243618625 + ... + 243621257.

It is an arithmetic number, because the mean of its divisors is an integer number (27349327728).

Almost surely, 2^641451304653 is an apocalyptic number.

It is an amenable number.

641451304653 is a deficient number, since it is larger than the sum of its proper divisors (233727182643).

641451304653 is a wasteful number, since it uses less digits than its factorization.

641451304653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 641451304653 its reverse (356403154146), we get a palindrome (997854458799).

The spelling of 641451304653 in words is "six hundred forty-one billion, four hundred fifty-one million, three hundred four thousand, six hundred fifty-three".