136550074621 has 2 divisors, whose sum is σ = 136550074622. Its totient is φ = 136550074620.

The previous prime is 136550074571. The next prime is 136550074649. The reversal of 136550074621 is 126470055631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69069621721 + 67480452900 = 262811^2 + 259770^2 .

It is an emirp because it is prime and its reverse (126470055631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136550074621 - 2³³ = 127960140029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136550074651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68275037310 + 68275037311.

It is an arithmetic number, because the mean of its divisors is an integer number (68275037311).

Almost surely, 2^136550074621 is an apocalyptic number.

It is an amenable number.

136550074621 is a deficient number, since it is larger than the sum of its proper divisors (1).

136550074621 is an equidigital number, since it uses as much as digits as its factorization.

136550074621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 136550074621 in words is "one hundred thirty-six billion, five hundred fifty million, seventy-four thousand, six hundred twenty-one".