7801836963493 has 2 divisors, whose sum is σ = 7801836963494. Its totient is φ = 7801836963492.

The previous prime is 7801836963421. The next prime is 7801836963499. The reversal of 7801836963493 is 3943696381087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7787855792929 + 13981170564 = 2790673^2 + 118242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7801836963493 is a prime.

It is a super-2 number, since 2×7801836963493² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7801836963499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900918481746 + 3900918481747.

It is an arithmetic number, because the mean of its divisors is an integer number (3900918481747).

Almost surely, 2^{7801836963493} is an apocalyptic number.

It is an amenable number.

7801836963493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7801836963493 is an equidigital number, since it uses as much as digits as its factorization.

7801836963493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 7801836963493 in words is "seven trillion, eight hundred one billion, eight hundred thirty-six million, nine hundred sixty-three thousand, four hundred ninety-three".