135199978984 has 16 divisors (see below), whose sum is σ = 289714240800. Its totient is φ = 57942848112.

The previous prime is 135199978957. The next prime is 135199978987. The reversal of 135199978984 is 489879991531.

It is not an unprimeable number, because it can be changed into a prime (135199978987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207142614 + ... + 1207142725.

It is an arithmetic number, because the mean of its divisors is an integer number (18107140050).

Almost surely, 2^135199978984 is an apocalyptic number.

135199978984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

135199978984 is an abundant number, since it is smaller than the sum of its proper divisors (154514261816).

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

135199978984 is a wasteful number, since it uses less digits than its factorization.

135199978984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414285352 (or 2414285348 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 73.

The spelling of 135199978984 in words is "one hundred thirty-five billion, one hundred ninety-nine million, nine hundred seventy-eight thousand, nine hundred eighty-four".