136206978371 has 2 divisors, whose sum is σ = 136206978372. Its totient is φ = 136206978370.

The previous prime is 136206978361. The next prime is 136206978409. The reversal of 136206978371 is 173879602631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136206978371 - 2⁶ = 136206978307 is a prime.

It is not a weakly prime, because it can be changed into another prime (136206978361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68103489185 + 68103489186.

It is an arithmetic number, because the mean of its divisors is an integer number (68103489186).

Almost surely, 2^136206978371 is an apocalyptic number.

136206978371 is a deficient number, since it is larger than the sum of its proper divisors (1).

136206978371 is an equidigital number, since it uses as much as digits as its factorization.

136206978371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 136206978371 in words is "one hundred thirty-six billion, two hundred six million, nine hundred seventy-eight thousand, three hundred seventy-one".