84591276990 has 256 divisors, whose sum is σ = 239990252544. Its totient is φ = 18852454400.

The previous prime is 84591276971. The next prime is 84591277019. The reversal of 84591276990 is 9967219548.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 87117205 + ... + 87118175.

It is an arithmetic number, because the mean of its divisors is an integer number (937461924).

Almost surely, 2^84591276990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84591276990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119995126272).

84591276990 is an abundant number, since it is smaller than the sum of its proper divisors (155398975554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84591276990 is a wasteful number, since it uses less digits than its factorization.

84591276990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 84591276990 in words is "eighty-four billion, five hundred ninety-one million, two hundred seventy-six thousand, nine hundred ninety".