136664038458457 has 2 divisors, whose sum is σ = 136664038458458. Its totient is φ = 136664038458456.

The previous prime is 136664038458449. The next prime is 136664038458463. The reversal of 136664038458457 is 754854830466631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84730165600201 + 51933872858256 = 9204899^2 + 7206516^2 .

It is a cyclic number.

It is not a de Polignac number, because 136664038458457 - 2³ = 136664038458449 is a prime.

It is a super-2 number, since 2×136664038458457² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136664038455457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68332019229228 + 68332019229229.

It is an arithmetic number, because the mean of its divisors is an integer number (68332019229229).

Almost surely, 2^{136664038458457} is an apocalyptic number.

It is an amenable number.

136664038458457 is a deficient number, since it is larger than the sum of its proper divisors (1).

136664038458457 is an equidigital number, since it uses as much as digits as its factorization.

136664038458457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1393459200, while the sum is 70.

The spelling of 136664038458457 in words is "one hundred thirty-six trillion, six hundred sixty-four billion, thirty-eight million, four hundred fifty-eight thousand, four hundred fifty-seven".