136704773861 has 4 divisors (see below), whose sum is σ = 137150066592. Its totient is φ = 136259481132.

The previous prime is 136704773831. The next prime is 136704773869. The reversal of 136704773861 is 168377407631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136704773861 - 2⁶ = 136704773797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136704773869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222645905 + ... + 222646518.

It is an arithmetic number, because the mean of its divisors is an integer number (34287516648).

Almost surely, 2^136704773861 is an apocalyptic number.

It is an amenable number.

136704773861 is a deficient number, since it is larger than the sum of its proper divisors (445292731).

136704773861 is an equidigital number, since it uses as much as digits as its factorization.

136704773861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445292730.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 136704773861 in words is "one hundred thirty-six billion, seven hundred four million, seven hundred seventy-three thousand, eight hundred sixty-one".