79212045499209 has 24 divisors (see below), whose sum is σ = 131180514147072. Its totient is φ = 45119412486720.

The previous prime is 79212045499199. The next prime is 79212045499219. The reversal of 79212045499209 is 90299454021297.

79212045499209 is a `hidden beast` number, since 7 + 92 + 1 + 2 + 0 + 454 + 9 + 92 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (79212045499199) and next prime (79212045499219).

It is not a de Polignac number, because 79212045499209 - 2⁹ = 79212045498697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (79212045499219) 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, 2008501137 + ... + 2008540574.

It is an arithmetic number, because the mean of its divisors is an integer number (5465854756128).

Almost surely, 2^{79212045499209} is an apocalyptic number.

It is an amenable number.

79212045499209 is a deficient number, since it is larger than the sum of its proper divisors (51968468647863).

79212045499209 is a wasteful number, since it uses less digits than its factorization.

79212045499209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017042037 (or 4017042034 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 79212045499209 in words is "seventy-nine trillion, two hundred twelve billion, forty-five million, four hundred ninety-nine thousand, two hundred nine".