74196197479 has 2 divisors, whose sum is σ = 74196197480. Its totient is φ = 74196197478.

The previous prime is 74196197477. The next prime is 74196197503. The reversal of 74196197479 is 97479169147.

It is a weak prime.

It is an emirp because it is prime and its reverse (97479169147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74196197479 - 2¹ = 74196197477 is a prime.

Together with 74196197477, 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 74196197479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74196197477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37098098739 + 37098098740.

It is an arithmetic number, because the mean of its divisors is an integer number (37098098740).

Almost surely, 2^74196197479 is an apocalyptic number.

74196197479 is a deficient number, since it is larger than the sum of its proper divisors (1).

74196197479 is an equidigital number, since it uses as much as digits as its factorization.

74196197479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 64.

The spelling of 74196197479 in words is "seventy-four billion, one hundred ninety-six million, one hundred ninety-seven thousand, four hundred seventy-nine".