74246631479 has 2 divisors, whose sum is σ = 74246631480. Its totient is φ = 74246631478.

The previous prime is 74246631457. The next prime is 74246631509. The reversal of 74246631479 is 97413664247.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97413664247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74246631479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74246631479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74246633479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37123315739 + 37123315740.

It is an arithmetic number, because the mean of its divisors is an integer number (37123315740).

Almost surely, 2^74246631479 is an apocalyptic number.

74246631479 is a deficient number, since it is larger than the sum of its proper divisors (1).

74246631479 is an equidigital number, since it uses as much as digits as its factorization.

74246631479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 53.

The spelling of 74246631479 in words is "seventy-four billion, two hundred forty-six million, six hundred thirty-one thousand, four hundred seventy-nine".