7138578877819 has 2 divisors, whose sum is σ = 7138578877820. Its totient is φ = 7138578877818.

The previous prime is 7138578877817. The next prime is 7138578877873. The reversal of 7138578877819 is 9187788758317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7138578877819 - 2¹ = 7138578877817 is a prime.

It is a super-2 number, since 2×7138578877819² (a number of 27 digits) contains 22 as substring.

Together with 7138578877817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7138578877811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569289438909 + 3569289438910.

It is an arithmetic number, because the mean of its divisors is an integer number (3569289438910).

Almost surely, 2^{7138578877819} is an apocalyptic number.

7138578877819 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138578877819 is an equidigital number, since it uses as much as digits as its factorization.

7138578877819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327656960, while the sum is 79.

The spelling of 7138578877819 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred seventy-seven thousand, eight hundred nineteen".