135631780086 has 64 divisors (see below), whose sum is σ = 306340185600. Its totient is φ = 39655795200.

The previous prime is 135631780033. The next prime is 135631780099. The reversal of 135631780086 is 680087136531.

135631780086 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2826151 + ... + 2873741.

It is an arithmetic number, because the mean of its divisors is an integer number (4786565400).

Almost surely, 2^135631780086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135631780086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153170092800).

135631780086 is an abundant number, since it is smaller than the sum of its proper divisors (170708405514).

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

135631780086 is a wasteful number, since it uses less digits than its factorization.

135631780086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49125.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 135631780086 in words is "one hundred thirty-five billion, six hundred thirty-one million, seven hundred eighty thousand, eighty-six".