136566321406 has 8 divisors (see below), whose sum is σ = 205096588920. Its totient is φ = 68200791768.

The previous prime is 136566321401. The next prime is 136566321407. The reversal of 136566321406 is 604123665631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136566321401) 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, 41182396 + ... + 41185711.

It is an arithmetic number, because the mean of its divisors is an integer number (25637073615).

Almost surely, 2^136566321406 is an apocalyptic number.

136566321406 is a deficient number, since it is larger than the sum of its proper divisors (68530267514).

136566321406 is an equidigital number, since it uses as much as digits as its factorization.

136566321406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82368938.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 136566321406 in words is "one hundred thirty-six billion, five hundred sixty-six million, three hundred twenty-one thousand, four hundred six".