641226698552 has 64 divisors (see below), whose sum is σ = 1404032400000. Its totient is φ = 271446180480.

The previous prime is 641226698549. The next prime is 641226698557. The reversal of 641226698552 is 255896622146.

641226698552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641226698552² (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 (641226698557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3151427 + ... + 3348722.

It is an arithmetic number, because the mean of its divisors is an integer number (21938006250).

Almost surely, 2^641226698552 is an apocalyptic number.

It is an amenable number.

641226698552 is an abundant number, since it is smaller than the sum of its proper divisors (762805701448).

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

641226698552 is a wasteful number, since it uses less digits than its factorization.

641226698552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500244 (or 6500240 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 56.

The spelling of 641226698552 in words is "six hundred forty-one billion, two hundred twenty-six million, six hundred ninety-eight thousand, five hundred fifty-two".