79221105143 has 2 divisors, whose sum is σ = 79221105144. Its totient is φ = 79221105142.

The previous prime is 79221105109. The next prime is 79221105179. The reversal of 79221105143 is 34150112297.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79221105143 - 2⁸ = 79221104887 is a prime.

It is a super-2 number, since 2×79221105143² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79221105343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39610552571 + 39610552572.

It is an arithmetic number, because the mean of its divisors is an integer number (39610552572).

Almost surely, 2^79221105143 is an apocalyptic number.

79221105143 is a deficient number, since it is larger than the sum of its proper divisors (1).

79221105143 is an equidigital number, since it uses as much as digits as its factorization.

79221105143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 79221105143 in words is "seventy-nine billion, two hundred twenty-one million, one hundred five thousand, one hundred forty-three".