79121211941 has 2 divisors, whose sum is σ = 79121211942. Its totient is φ = 79121211940.

The previous prime is 79121211931. The next prime is 79121211973. The reversal of 79121211941 is 14911212197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42660837025 + 36460374916 = 206545^2 + 190946^2 .

It is a cyclic number.

It is not a de Polignac number, because 79121211941 - 2⁶ = 79121211877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79121211895 and 79121211904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79121211931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39560605970 + 39560605971.

It is an arithmetic number, because the mean of its divisors is an integer number (39560605971).

Almost surely, 2^79121211941 is an apocalyptic number.

It is an amenable number.

79121211941 is a deficient number, since it is larger than the sum of its proper divisors (1).

79121211941 is an equidigital number, since it uses as much as digits as its factorization.

79121211941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 38.

The spelling of 79121211941 in words is "seventy-nine billion, one hundred twenty-one million, two hundred eleven thousand, nine hundred forty-one".