136378844287 has 32 divisors (see below), whose sum is σ = 165201223680. Its totient is φ = 110064451200.

The previous prime is 136378844279. The next prime is 136378844291. The reversal of 136378844287 is 782448873631.

It is a cyclic number.

It is not a de Polignac number, because 136378844287 - 2³ = 136378844279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136378844257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2788914 + ... + 2837392.

It is an arithmetic number, because the mean of its divisors is an integer number (5162538240).

Almost surely, 2^136378844287 is an apocalyptic number.

136378844287 is a deficient number, since it is larger than the sum of its proper divisors (28822379393).

136378844287 is a wasteful number, since it uses less digits than its factorization.

136378844287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48783.

The product of its digits is 43352064, while the sum is 61.

The spelling of 136378844287 in words is "one hundred thirty-six billion, three hundred seventy-eight million, eight hundred forty-four thousand, two hundred eighty-seven".