2865990366709 has 2 divisors, whose sum is σ = 2865990366710. Its totient is φ = 2865990366708.

The previous prime is 2865990366677. The next prime is 2865990366773. The reversal of 2865990366709 is 9076630995682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2407183280100 + 458807086609 = 1551510^2 + 677353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865990366709 - 2⁵ = 2865990366677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2865990364709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432995183354 + 1432995183355.

It is an arithmetic number, because the mean of its divisors is an integer number (1432995183355).

Almost surely, 2^{2865990366709} is an apocalyptic number.

It is an amenable number.

2865990366709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865990366709 is an equidigital number, since it uses as much as digits as its factorization.

2865990366709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264539520, while the sum is 70.

The spelling of 2865990366709 in words is "two trillion, eight hundred sixty-five billion, nine hundred ninety million, three hundred sixty-six thousand, seven hundred nine".