84772356591 has 16 divisors (see below), whose sum is σ = 122600132480. Its totient is φ = 51792294240.

The previous prime is 84772356589. The next prime is 84772356593. The reversal of 84772356591 is 19565327748.

It is an interprime number because it is at equal distance from previous prime (84772356589) and next prime (84772356593).

It is not a de Polignac number, because 84772356591 - 2¹ = 84772356589 is a prime.

It is a super-2 number, since 2×84772356591² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84772356593) 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, 7813465 + ... + 7824306.

It is an arithmetic number, because the mean of its divisors is an integer number (7662508280).

Almost surely, 2^84772356591 is an apocalyptic number.

84772356591 is a deficient number, since it is larger than the sum of its proper divisors (37827775889).

84772356591 is a wasteful number, since it uses less digits than its factorization.

84772356591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15637926.

The product of its digits is 12700800, while the sum is 57.

The spelling of 84772356591 in words is "eighty-four billion, seven hundred seventy-two million, three hundred fifty-six thousand, five hundred ninety-one".