79852001891 has 2 divisors, whose sum is σ = 79852001892. Its totient is φ = 79852001890.

The previous prime is 79852001849. The next prime is 79852001897. The reversal of 79852001891 is 19810025897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79852001891 - 2¹⁰ = 79852000867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (79852001897) 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 as a sum of consecutive naturals, namely, 39926000945 + 39926000946.

It is an arithmetic number, because the mean of its divisors is an integer number (39926000946).

Almost surely, 2^79852001891 is an apocalyptic number.

79852001891 is a deficient number, since it is larger than the sum of its proper divisors (1).

79852001891 is an equidigital number, since it uses as much as digits as its factorization.

79852001891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 79852001891 in words is "seventy-nine billion, eight hundred fifty-two million, one thousand, eight hundred ninety-one".