136831587049 has 8 divisors (see below), whose sum is σ = 138225534920. Its totient is φ = 135440159616.

The previous prime is 136831587001. The next prime is 136831587059. The reversal of 136831587049 is 940785138631.

It can be written as a sum of positive squares in 4 ways, for example, as 47920274649 + 88911312400 = 218907^2 + 298180^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 136831587049 - 2²¹ = 136829489897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136831587059) 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 7 ways as a sum of consecutive naturals, for example, 520884 + ... + 738229.

It is an arithmetic number, because the mean of its divisors is an integer number (17278191865).

Almost surely, 2^136831587049 is an apocalyptic number.

It is an amenable number.

136831587049 is a deficient number, since it is larger than the sum of its proper divisors (1393947871).

136831587049 is a wasteful number, since it uses less digits than its factorization.

136831587049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260219.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 136831587049 in words is "one hundred thirty-six billion, eight hundred thirty-one million, five hundred eighty-seven thousand, forty-nine".