87702765136 has 80 divisors (see below), whose sum is σ = 203001610240. Its totient is φ = 35913870720.

The previous prime is 87702765131. The next prime is 87702765191. The reversal of 87702765136 is 63156720778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87702765131) 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, 114415 + ... + 434161.

It is an arithmetic number, because the mean of its divisors is an integer number (2537520128).

Almost surely, 2^87702765136 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 87702765136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101500805120).

87702765136 is an abundant number, since it is smaller than the sum of its proper divisors (115298845104).

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

87702765136 is a wasteful number, since it uses less digits than its factorization.

87702765136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319872 (or 319866 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 87702765136 in words is "eighty-seven billion, seven hundred two million, seven hundred sixty-five thousand, one hundred thirty-six".