84279966771 has 96 divisors (see below), whose sum is σ = 152356288000. Its totient is φ = 40325091840.

The previous prime is 84279966733. The next prime is 84279966781. The reversal of 84279966771 is 17766997248.

It is not a de Polignac number, because 84279966771 - 2²¹ = 84277869619 is a prime.

It is a super-2 number, since 2×84279966771² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84279966731) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16480911 + ... + 16486023.

Almost surely, 2^84279966771 is an apocalyptic number.

84279966771 is a deficient number, since it is larger than the sum of its proper divisors (68076321229).

84279966771 is a wasteful number, since it uses less digits than its factorization.

84279966771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657 (or 5646 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 66.

The spelling of 84279966771 in words is "eighty-four billion, two hundred seventy-nine million, nine hundred sixty-six thousand, seven hundred seventy-one".