2639602043291 has 2 divisors, whose sum is σ = 2639602043292. Its totient is φ = 2639602043290.

The previous prime is 2639602043203. The next prime is 2639602043339. The reversal of 2639602043291 is 1923402069362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2639602043291 - 2¹⁸ = 2639601781147 is a prime.

It is a super-3 number, since 3×2639602043291³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2639602043201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319801021645 + 1319801021646.

It is an arithmetic number, because the mean of its divisors is an integer number (1319801021646).

Almost surely, 2^{2639602043291} is an apocalyptic number.

2639602043291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639602043291 is an equidigital number, since it uses as much as digits as its factorization.

2639602043291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 2639602043291 in words is "two trillion, six hundred thirty-nine billion, six hundred two million, forty-three thousand, two hundred ninety-one".