79501478479 has 4 divisors (see below), whose sum is σ = 83685766840. Its totient is φ = 75317190120.

The previous prime is 79501478473. The next prime is 79501478519. The reversal of 79501478479 is 97487410597.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79501478479 - 2⁹ = 79501477967 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 (79501478473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092144152 + ... + 2092144189.

It is an arithmetic number, because the mean of its divisors is an integer number (20921441710).

Almost surely, 2^79501478479 is an apocalyptic number.

79501478479 is a deficient number, since it is larger than the sum of its proper divisors (4184288361).

79501478479 is a wasteful number, since it uses less digits than its factorization.

79501478479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184288360.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 79501478479 in words is "seventy-nine billion, five hundred one million, four hundred seventy-eight thousand, four hundred seventy-nine".