79641823146 has 32 divisors (see below), whose sum is σ = 163987929600. Its totient is φ = 25770803184.

The previous prime is 79641823117. The next prime is 79641823147. The reversal of 79641823146 is 64132814697.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79641823147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904846 + ... + 988953.

It is an arithmetic number, because the mean of its divisors is an integer number (5124622800).

Almost surely, 2^79641823146 is an apocalyptic number.

79641823146 is an abundant number, since it is smaller than the sum of its proper divisors (84346106454).

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

79641823146 is a wasteful number, since it uses less digits than its factorization.

79641823146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894010.

The product of its digits is 1741824, while the sum is 51.

The spelling of 79641823146 in words is "seventy-nine billion, six hundred forty-one million, eight hundred twenty-three thousand, one hundred forty-six".