643102226454 has 32 divisors (see below), whose sum is σ = 1289186585856. Its totient is φ = 213870550880.

The previous prime is 643102226449. The next prime is 643102226467. The reversal of 643102226454 is 454622201346.

It is a happy number.

643102226454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19011484 + ... + 19045280.

It is an arithmetic number, because the mean of its divisors is an integer number (40287080808).

Almost surely, 2^643102226454 is an apocalyptic number.

643102226454 is an abundant number, since it is smaller than the sum of its proper divisors (646084359402).

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

643102226454 is a wasteful number, since it uses less digits than its factorization.

643102226454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41060.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 643102226454 in words is "six hundred forty-three billion, one hundred two million, two hundred twenty-six thousand, four hundred fifty-four".