7812641479 has 2 divisors, whose sum is σ = 7812641480. Its totient is φ = 7812641478.

The previous prime is 7812641423. The next prime is 7812641489. The reversal of 7812641479 is 9741462187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7812641479 - 2¹⁹ = 7812117191 is a prime.

It is a super-2 number, since 2×7812641479² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7812641489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3906320739 + 3906320740.

It is an arithmetic number, because the mean of its divisors is an integer number (3906320740).

Almost surely, 2^7812641479 is an apocalyptic number.

7812641479 is a deficient number, since it is larger than the sum of its proper divisors (1).

7812641479 is an equidigital number, since it uses as much as digits as its factorization.

7812641479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 7812641479 is about 88389.1479707775. The cubic root of 7812641479 is about 1984.2632926967.

The spelling of 7812641479 in words is "seven billion, eight hundred twelve million, six hundred forty-one thousand, four hundred seventy-nine".