8221639190435 has 32 divisors (see below), whose sum is σ = 10939819806720. Its totient is φ = 5881079318400.

The previous prime is 8221639190407. The next prime is 8221639190447. The reversal of 8221639190435 is 5340919361228.

It is a happy number.

It is not a de Polignac number, because 8221639190435 - 2⁸ = 8221639190179 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97464206 + ... + 97548524.

It is an arithmetic number, because the mean of its divisors is an integer number (341869368960).

Almost surely, 2^{8221639190435} is an apocalyptic number.

8221639190435 is a deficient number, since it is larger than the sum of its proper divisors (2718180616285).

8221639190435 is a wasteful number, since it uses less digits than its factorization.

8221639190435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113459.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 8221639190435 in words is "eight trillion, two hundred twenty-one billion, six hundred thirty-nine million, one hundred ninety thousand, four hundred thirty-five".