136427388287 has 4 divisors (see below), whose sum is σ = 136930810656. Its totient is φ = 135923965920.

The previous prime is 136427388203. The next prime is 136427388299. The reversal of 136427388287 is 782883724631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136427388287 - 2¹⁴ = 136427371903 is a prime.

It is a super-2 number, since 2×136427388287² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136427388787) 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, 251710778 + ... + 251711319.

It is an arithmetic number, because the mean of its divisors is an integer number (34232702664).

Almost surely, 2^136427388287 is an apocalyptic number.

136427388287 is a deficient number, since it is larger than the sum of its proper divisors (503422369).

136427388287 is an equidigital number, since it uses as much as digits as its factorization.

136427388287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503422368.

The product of its digits is 21676032, while the sum is 59.

The spelling of 136427388287 in words is "one hundred thirty-six billion, four hundred twenty-seven million, three hundred eighty-eight thousand, two hundred eighty-seven".