79404532663 has 4 divisors (see below), whose sum is σ = 79519445848. Its totient is φ = 79289619480.

The previous prime is 79404532661. The next prime is 79404532717. The reversal of 79404532663 is 36623540497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36623540497 = 19 ⋅1927554763.

It is a cyclic number.

It is not a de Polignac number, because 79404532663 - 2¹ = 79404532661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79404532661) 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, 57455556 + ... + 57456937.

It is an arithmetic number, because the mean of its divisors is an integer number (19879861462).

Almost surely, 2^79404532663 is an apocalyptic number.

79404532663 is a deficient number, since it is larger than the sum of its proper divisors (114913185).

79404532663 is a wasteful number, since it uses less digits than its factorization.

79404532663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114913184.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 79404532663 in words is "seventy-nine billion, four hundred four million, five hundred thirty-two thousand, six hundred sixty-three".