79747066418 has 48 divisors (see below), whose sum is σ = 133185237120. Its totient is φ = 35695662912.

The previous prime is 79747066417. The next prime is 79747066459. The reversal of 79747066418 is 81466074797.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79747066417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1475480 + ... + 1528572.

It is an arithmetic number, because the mean of its divisors is an integer number (2774692440).

Almost surely, 2^79747066418 is an apocalyptic number.

79747066418 is a deficient number, since it is larger than the sum of its proper divisors (53438170702).

79747066418 is a wasteful number, since it uses less digits than its factorization.

79747066418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53219 (or 53190 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 79747066418 in words is "seventy-nine billion, seven hundred forty-seven million, sixty-six thousand, four hundred eighteen".