79810486218 has 32 divisors (see below), whose sum is σ = 177437044800. Its totient is φ = 26591434128.

The previous prime is 79810486207. The next prime is 79810486219. The reversal of 79810486218 is 81268401897.

79810486218 is a `hidden beast` number, since 7 + 9 + 8 + 1 + 0 + 4 + 8 + 621 + 8 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (79810486219) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 214428 + ... + 453431.

It is an arithmetic number, because the mean of its divisors is an integer number (5544907650).

Almost surely, 2^79810486218 is an apocalyptic number.

79810486218 is an abundant number, since it is smaller than the sum of its proper divisors (97626558582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79810486218 is a wasteful number, since it uses less digits than its factorization.

79810486218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670083 (or 670077 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The spelling of 79810486218 in words is "seventy-nine billion, eight hundred ten million, four hundred eighty-six thousand, two hundred eighteen".