135440086986 has 32 divisors (see below), whose sum is σ = 301067136000. Its totient is φ = 45133320960.

The previous prime is 135440086937. The next prime is 135440086987. The reversal of 135440086986 is 689680044531.

135440086986 is a `hidden beast` number, since 1 + 3 + 544 + 0 + 0 + 8 + 6 + 98 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (135440086987) by changing a digit.

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, 186711 + ... + 552938.

It is an arithmetic number, because the mean of its divisors is an integer number (9408348000).

Almost surely, 2^135440086986 is an apocalyptic number.

135440086986 is an abundant number, since it is smaller than the sum of its proper divisors (165627049014).

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

135440086986 is a wasteful number, since it uses less digits than its factorization.

135440086986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743051 (or 743045 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 135440086986 in words is "one hundred thirty-five billion, four hundred forty million, eighty-six thousand, nine hundred eighty-six".