38646341650369 has 2 divisors, whose sum is σ = 38646341650370. Its totient is φ = 38646341650368.

The previous prime is 38646341650337. The next prime is 38646341650373. The reversal of 38646341650369 is 96305614364683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27829971769744 + 10816369880625 = 5275412^2 + 3288825^2 .

It is a cyclic number.

It is not a de Polignac number, because 38646341650369 - 2⁵ = 38646341650337 is a prime.

It is a super-2 number, since 2×38646341650369² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38646341650369.

It is not a weakly prime, because it can be changed into another prime (38646341650379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19323170825184 + 19323170825185.

It is an arithmetic number, because the mean of its divisors is an integer number (19323170825185).

Almost surely, 2^{38646341650369} is an apocalyptic number.

It is an amenable number.

38646341650369 is a deficient number, since it is larger than the sum of its proper divisors (1).

38646341650369 is an equidigital number, since it uses as much as digits as its factorization.

38646341650369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201553920, while the sum is 64.

The spelling of 38646341650369 in words is "thirty-eight trillion, six hundred forty-six billion, three hundred forty-one million, six hundred fifty thousand, three hundred sixty-nine".