641451289798 has 16 divisors (see below), whose sum is σ = 1049743444176. Its totient is φ = 291542135040.

The previous prime is 641451289783. The next prime is 641451289849. The reversal of 641451289798 is 897982154146.

It is a super-2 number, since 2×641451289798² (a number of 24 digits) contains 22 as substring.

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, 1084311 + ... + 1568002.

It is an arithmetic number, because the mean of its divisors is an integer number (65608965261).

Almost surely, 2^641451289798 is an apocalyptic number.

641451289798 is a deficient number, since it is larger than the sum of its proper divisors (408292154378).

641451289798 is a wasteful number, since it uses less digits than its factorization.

641451289798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663319.

The product of its digits is 34836480, while the sum is 64.

The spelling of 641451289798 in words is "six hundred forty-one billion, four hundred fifty-one million, two hundred eighty-nine thousand, seven hundred ninety-eight".