84279967669431 has 32 divisors (see below), whose sum is σ = 126786392893440. Its totient is φ = 55321520940000.

The previous prime is 84279967669409. The next prime is 84279967669481. The reversal of 84279967669431 is 13496676997248.

84279967669431 is a `hidden beast` number, since 8 + 4 + 27 + 9 + 96 + 76 + 6 + 9 + 431 = 666.

It is not a de Polignac number, because 84279967669431 - 2¹⁵ = 84279967636663 is a prime.

It is a super-2 number, since 2×84279967669431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84279967669481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27830980 + ... + 30710313.

It is an arithmetic number, because the mean of its divisors is an integer number (3962074777920).

Almost surely, 2^{84279967669431} is an apocalyptic number.

84279967669431 is a deficient number, since it is larger than the sum of its proper divisors (42506425224009).

84279967669431 is a wasteful number, since it uses less digits than its factorization.

84279967669431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58542124 (or 58542118 counting only the distinct ones).

The product of its digits is 5925685248, while the sum is 81.

The spelling of 84279967669431 in words is "eighty-four trillion, two hundred seventy-nine billion, nine hundred sixty-seven million, six hundred sixty-nine thousand, four hundred thirty-one".