63690579479 has 2 divisors, whose sum is σ = 63690579480. Its totient is φ = 63690579478.

The previous prime is 63690579419. The next prime is 63690579499. The reversal of 63690579479 is 97497509636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63690579479 - 2¹² = 63690575383 is a prime.

It is a super-2 number, since 2×63690579479² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63690579409) 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, 31845289739 + 31845289740.

It is an arithmetic number, because the mean of its divisors is an integer number (31845289740).

Almost surely, 2^63690579479 is an apocalyptic number.

63690579479 is a deficient number, since it is larger than the sum of its proper divisors (1).

63690579479 is an equidigital number, since it uses as much as digits as its factorization.

63690579479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77157360, while the sum is 65.

The spelling of 63690579479 in words is "sixty-three billion, six hundred ninety million, five hundred seventy-nine thousand, four hundred seventy-nine".