135818836978 has 16 divisors (see below), whose sum is σ = 222885835200. Its totient is φ = 61558938000.

The previous prime is 135818836973. The next prime is 135818836987. The reversal of 135818836978 is 879638818531.

It is not an unprimeable number, because it can be changed into a prime (135818836973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8836998 + ... + 8852353.

It is an arithmetic number, because the mean of its divisors is an integer number (13930364700).

Almost surely, 2^135818836978 is an apocalyptic number.

135818836978 is a deficient number, since it is larger than the sum of its proper divisors (87066998222).

135818836978 is a wasteful number, since it uses less digits than its factorization.

135818836978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17689713.

The product of its digits is 69672960, while the sum is 67.

The spelling of 135818836978 in words is "one hundred thirty-five billion, eight hundred eighteen million, eight hundred thirty-six thousand, nine hundred seventy-eight".