136572052372409 has 2 divisors, whose sum is σ = 136572052372410. Its totient is φ = 136572052372408.

The previous prime is 136572052372387. The next prime is 136572052372433. The reversal of 136572052372409 is 904273250275631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136489685094400 + 82367278009 = 11682880^2 + 286997^2 .

It is a cyclic number.

It is not a de Polignac number, because 136572052372409 - 2²⁸ = 136571783936953 is a prime.

It is not a weakly prime, because it can be changed into another prime (136572052072409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68286026186204 + 68286026186205.

It is an arithmetic number, because the mean of its divisors is an integer number (68286026186205).

Almost surely, 2^{136572052372409} is an apocalyptic number.

It is an amenable number.

136572052372409 is a deficient number, since it is larger than the sum of its proper divisors (1).

136572052372409 is an equidigital number, since it uses as much as digits as its factorization.

136572052372409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 136572052372409 in words is "one hundred thirty-six trillion, five hundred seventy-two billion, fifty-two million, three hundred seventy-two thousand, four hundred nine".