86915878686054 has 160 divisors (see below), whose sum is σ = 215167961226240. Its totient is φ = 26002630368000.

The previous prime is 86915878686011. The next prime is 86915878686071. The reversal of 86915878686054 is 45068687851968.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2976454654 + ... + 2976483854.

It is an arithmetic number, because the mean of its divisors is an integer number (1344799757664).

Almost surely, 2^{86915878686054} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86915878686054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107583980613120).

86915878686054 is an abundant number, since it is smaller than the sum of its proper divisors (128252082540186).

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

86915878686054 is a wasteful number, since it uses less digits than its factorization.

86915878686054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50448 (or 50439 counting only the distinct ones).

The product of its (nonzero) digits is 5573836800, while the sum is 81.

The spelling of 86915878686054 in words is "eighty-six trillion, nine hundred fifteen billion, eight hundred seventy-eight million, six hundred eighty-six thousand, fifty-four".