7421713525819 has 2 divisors, whose sum is σ = 7421713525820. Its totient is φ = 7421713525818.

The previous prime is 7421713525817. The next prime is 7421713525861. The reversal of 7421713525819 is 9185253171247.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7421713525819 - 2¹ = 7421713525817 is a prime.

It is a super-2 number, since 2×7421713525819² (a number of 27 digits) contains 22 as substring.

Together with 7421713525817, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7421713525819.

It is not a weakly prime, because it can be changed into another prime (7421713525817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710856762909 + 3710856762910.

It is an arithmetic number, because the mean of its divisors is an integer number (3710856762910).

Almost surely, 2^{7421713525819} is an apocalyptic number.

7421713525819 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421713525819 is an equidigital number, since it uses as much as digits as its factorization.

7421713525819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 55.

The spelling of 7421713525819 in words is "seven trillion, four hundred twenty-one billion, seven hundred thirteen million, five hundred twenty-five thousand, eight hundred nineteen".