87790486784 has 648 divisors, whose sum is σ = 253104530112. Its totient is φ = 29501521920.

The previous prime is 87790486781. The next prime is 87790486793. The reversal of 87790486784 is 48768409778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87790486781) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1202609372 + ... + 1202609444.

Almost surely, 2^87790486784 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 87790486784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126552265056).

87790486784 is an abundant number, since it is smaller than the sum of its proper divisors (165314043328).

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

87790486784 is a wasteful number, since it uses less digits than its factorization.

87790486784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 151732224, while the sum is 68.

The spelling of 87790486784 in words is "eighty-seven billion, seven hundred ninety million, four hundred eighty-six thousand, seven hundred eighty-four".