7719847133461 has 2 divisors, whose sum is σ = 7719847133462. Its totient is φ = 7719847133460.

The previous prime is 7719847133459. The next prime is 7719847133491. The reversal of 7719847133461 is 1643317489177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4751397252900 + 2968449880561 = 2179770^2 + 1722919^2 .

It is a cyclic number.

It is not a de Polignac number, because 7719847133461 - 2¹ = 7719847133459 is a prime.

Together with 7719847133459, 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 7719847133461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7719847133491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3859923566730 + 3859923566731.

It is an arithmetic number, because the mean of its divisors is an integer number (3859923566731).

Almost surely, 2^{7719847133461} is an apocalyptic number.

It is an amenable number.

7719847133461 is a deficient number, since it is larger than the sum of its proper divisors (1).

7719847133461 is an equidigital number, since it uses as much as digits as its factorization.

7719847133461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21337344, while the sum is 61.

The spelling of 7719847133461 in words is "seven trillion, seven hundred nineteen billion, eight hundred forty-seven million, one hundred thirty-three thousand, four hundred sixty-one".