2126590766389 has 2 divisors, whose sum is σ = 2126590766390. Its totient is φ = 2126590766388.

The previous prime is 2126590766341. The next prime is 2126590766471. The reversal of 2126590766389 is 9836670956212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1180558306225 + 946032460164 = 1086535^2 + 972642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126590766389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2126590766389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2126593766389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063295383194 + 1063295383195.

It is an arithmetic number, because the mean of its divisors is an integer number (1063295383195).

Almost surely, 2^{2126590766389} is an apocalyptic number.

It is an amenable number.

2126590766389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126590766389 is an equidigital number, since it uses as much as digits as its factorization.

2126590766389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 2126590766389 in words is "two trillion, one hundred twenty-six billion, five hundred ninety million, seven hundred sixty-six thousand, three hundred eighty-nine".