10391479663 has 4 divisors (see below), whose sum is σ = 10391693688. Its totient is φ = 10391265640.

The previous prime is 10391479633. The next prime is 10391479669. The reversal of 10391479663 is 36697419301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36697419301 = 1933 ⋅18984697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10391479663 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10391479669) 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 in 3 ways as a sum of consecutive naturals, for example, 4668 + ... + 144238.

It is an arithmetic number, because the mean of its divisors is an integer number (2597923422).

Almost surely, 2^10391479663 is an apocalyptic number.

10391479663 is a deficient number, since it is larger than the sum of its proper divisors (214025).

10391479663 is an equidigital number, since it uses as much as digits as its factorization.

10391479663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214024.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 10391479663 in words is "ten billion, three hundred ninety-one million, four hundred seventy-nine thousand, six hundred sixty-three".