136579826831 has 4 divisors (see below), whose sum is σ = 156091230672. Its totient is φ = 117068422992.

The previous prime is 136579826809. The next prime is 136579826881. The reversal of 136579826831 is 138628975631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138628975631 = 47 ⋅2949552673.

It is a cyclic number.

It is not a de Polignac number, because 136579826831 - 2¹⁰ = 136579825807 is a prime.

It is a super-2 number, since 2×136579826831² (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 (136579826881) 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, 9755701910 + ... + 9755701923.

It is an arithmetic number, because the mean of its divisors is an integer number (39022807668).

Almost surely, 2^136579826831 is an apocalyptic number.

136579826831 is a deficient number, since it is larger than the sum of its proper divisors (19511403841).

136579826831 is an equidigital number, since it uses as much as digits as its factorization.

136579826831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19511403840.

The product of its digits is 13063680, while the sum is 59.

The spelling of 136579826831 in words is "one hundred thirty-six billion, five hundred seventy-nine million, eight hundred twenty-six thousand, eight hundred thirty-one".