5194291884721 has 2 divisors, whose sum is σ = 5194291884722. Its totient is φ = 5194291884720.

The previous prime is 5194291884653. The next prime is 5194291884737. The reversal of 5194291884721 is 1274881924915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5115829712400 + 78462172321 = 2261820^2 + 280111^2 .

It is a cyclic number.

It is not a de Polignac number, because 5194291884721 - 2⁹ = 5194291884209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5194291884721.

It is not a weakly prime, because it can be changed into another prime (5194291884751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2597145942360 + 2597145942361.

It is an arithmetic number, because the mean of its divisors is an integer number (2597145942361).

Almost surely, 2^{5194291884721} is an apocalyptic number.

It is an amenable number.

5194291884721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5194291884721 is an equidigital number, since it uses as much as digits as its factorization.

5194291884721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 61.

The spelling of 5194291884721 in words is "five trillion, one hundred ninety-four billion, two hundred ninety-one million, eight hundred eighty-four thousand, seven hundred twenty-one".