79641823147 has 2 divisors, whose sum is σ = 79641823148. Its totient is φ = 79641823146.

The previous prime is 79641823117. The next prime is 79641823181. The reversal of 79641823147 is 74132814697.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79641823147 - 2¹⁵ = 79641790379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79641823094 and 79641823103.

It is not a weakly prime, because it can be changed into another prime (79641823117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39820911573 + 39820911574.

It is an arithmetic number, because the mean of its divisors is an integer number (39820911574).

Almost surely, 2^79641823147 is an apocalyptic number.

79641823147 is a deficient number, since it is larger than the sum of its proper divisors (1).

79641823147 is an equidigital number, since it uses as much as digits as its factorization.

79641823147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The spelling of 79641823147 in words is "seventy-nine billion, six hundred forty-one million, eight hundred twenty-three thousand, one hundred forty-seven".