79827579865396 has 12 divisors (see below), whose sum is σ = 152398107015840. Its totient is φ = 36285263575160.

The previous prime is 79827579865373. The next prime is 79827579865403. The reversal of 79827579865396 is 69356897572897.

It is a happy number.

It is a super-2 number, since 2×79827579865396² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79827579865396.

It is a congruent number.

It is an unprimeable number.

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, 907131589336 + ... + 907131589423.

It is an arithmetic number, because the mean of its divisors is an integer number (12699842251320).

Almost surely, 2^{79827579865396} is an apocalyptic number.

It is an amenable number.

79827579865396 is a deficient number, since it is larger than the sum of its proper divisors (72570527150444).

79827579865396 is a wasteful number, since it uses less digits than its factorization.

79827579865396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814263178774 (or 1814263178772 counting only the distinct ones).

The product of its digits is 86416243200, while the sum is 91.

The spelling of 79827579865396 in words is "seventy-nine trillion, eight hundred twenty-seven billion, five hundred seventy-nine million, eight hundred sixty-five thousand, three hundred ninety-six".