8051286643 has 16 divisors (see below), whose sum is σ = 8441369856. Its totient is φ = 7664643360.

The previous prime is 8051286641. The next prime is 8051286647. The reversal of 8051286643 is 3466821508.

It is a cyclic number.

It is not a de Polignac number, because 8051286643 - 2¹ = 8051286641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8051286643.

It is not an unprimeable number, because it can be changed into a prime (8051286641) 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, 6235828 + ... + 6237118.

It is an arithmetic number, because the mean of its divisors is an integer number (527585616).

Almost surely, 2^8051286643 is an apocalyptic number.

8051286643 is a deficient number, since it is larger than the sum of its proper divisors (390083213).

8051286643 is a wasteful number, since it uses less digits than its factorization.

8051286643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 8051286643 is about 89728.9621192623. The cubic root of 8051286643 is about 2004.2647862516.

The spelling of 8051286643 in words is "eight billion, fifty-one million, two hundred eighty-six thousand, six hundred forty-three".