87774089144 has 64 divisors (see below), whose sum is σ = 191865231360. Its totient is φ = 36867600000.

The previous prime is 87774089111. The next prime is 87774089153. The reversal of 87774089144 is 44198047778.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679769 + ... + 798519.

It is an arithmetic number, because the mean of its divisors is an integer number (2997894240).

Almost surely, 2^87774089144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87774089144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95932615680).

87774089144 is an abundant number, since it is smaller than the sum of its proper divisors (104091142216).

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

87774089144 is a wasteful number, since it uses less digits than its factorization.

87774089144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119028 (or 119024 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 87774089144 in words is "eighty-seven billion, seven hundred seventy-four million, eighty-nine thousand, one hundred forty-four".