79982219867 has 8 divisors (see below), whose sum is σ = 88117226352. Its totient is φ = 71991196000.

The previous prime is 79982219857. The next prime is 79982219923. The reversal of 79982219867 is 76891228997.

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

It is a cyclic number.

It is not a de Polignac number, because 79982219867 - 2⁴ = 79982219851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79982219797 and 79982219806.

It is not an unprimeable number, because it can be changed into a prime (79982219857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35994488 + ... + 35996709.

It is an arithmetic number, because the mean of its divisors is an integer number (11014653294).

Almost surely, 2^79982219867 is an apocalyptic number.

79982219867 is a deficient number, since it is larger than the sum of its proper divisors (8135006485).

79982219867 is a wasteful number, since it uses less digits than its factorization.

79982219867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71991309.

The product of its digits is 54867456, while the sum is 68.

The spelling of 79982219867 in words is "seventy-nine billion, nine hundred eighty-two million, two hundred nineteen thousand, eight hundred sixty-seven".