79121277782 has 8 divisors (see below), whose sum is σ = 124928333400. Its totient is φ = 37478499984.

The previous prime is 79121277779. The next prime is 79121277797. The reversal of 79121277782 is 28777212197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041069407 + ... + 1041069482.

It is an arithmetic number, because the mean of its divisors is an integer number (15616041675).

Almost surely, 2^79121277782 is an apocalyptic number.

79121277782 is a deficient number, since it is larger than the sum of its proper divisors (45807055618).

79121277782 is a wasteful number, since it uses less digits than its factorization.

79121277782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082138910.

The product of its digits is 1382976, while the sum is 53.

The spelling of 79121277782 in words is "seventy-nine billion, one hundred twenty-one million, two hundred seventy-seven thousand, seven hundred eighty-two".