84591276991 has 8 divisors (see below), whose sum is σ = 92457975344. Its totient is φ = 76918818240.

The previous prime is 84591276971. The next prime is 84591277019. The reversal of 84591276991 is 19967219548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84591276991 - 2¹³ = 84591268799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84591276971) 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, 48558990 + ... + 48560731.

It is an arithmetic number, because the mean of its divisors is an integer number (11557246918).

Almost surely, 2^84591276991 is an apocalyptic number.

84591276991 is a deficient number, since it is larger than the sum of its proper divisors (7866698353).

84591276991 is a wasteful number, since it uses less digits than its factorization.

84591276991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97119801.

The product of its digits is 9797760, while the sum is 61.

The spelling of 84591276991 in words is "eighty-four billion, five hundred ninety-one million, two hundred seventy-six thousand, nine hundred ninety-one".