84771285631 has 16 divisors (see below), whose sum is σ = 88168919040. Its totient is φ = 81416547360.

The previous prime is 84771285629. The next prime is 84771285637. The reversal of 84771285631 is 13658217748.

It is a cyclic number.

It is not a de Polignac number, because 84771285631 - 2¹ = 84771285629 is a prime.

It is a super-2 number, since 2×84771285631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84771285637) 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, 3621441 + ... + 3644773.

It is an arithmetic number, because the mean of its divisors is an integer number (5510557440).

Almost surely, 2^84771285631 is an apocalyptic number.

84771285631 is a deficient number, since it is larger than the sum of its proper divisors (3397633409).

84771285631 is a wasteful number, since it uses less digits than its factorization.

84771285631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24246.

The product of its digits is 2257920, while the sum is 52.

The spelling of 84771285631 in words is "eighty-four billion, seven hundred seventy-one million, two hundred eighty-five thousand, six hundred thirty-one".