8261779622 has 16 divisors (see below), whose sum is σ = 12508745760. Its totient is φ = 4092235392.

The previous prime is 8261779619. The next prime is 8261779627. The reversal of 8261779622 is 2269771628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261779627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491879 + ... + 508397.

It is an arithmetic number, because the mean of its divisors is an integer number (781796610).

Almost surely, 2^8261779622 is an apocalyptic number.

8261779622 is a deficient number, since it is larger than the sum of its proper divisors (4246966138).

8261779622 is a wasteful number, since it uses less digits than its factorization.

8261779622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18847.

The product of its digits is 1016064, while the sum is 50.

The square root of 8261779622 is about 90894.3321775346. The cubic root of 8261779622 is about 2021.5812555802.

The spelling of 8261779622 in words is "eight billion, two hundred sixty-one million, seven hundred seventy-nine thousand, six hundred twenty-two".