79431941773 has 2 divisors, whose sum is σ = 79431941774. Its totient is φ = 79431941772.

The previous prime is 79431941759. The next prime is 79431941789. The reversal of 79431941773 is 37714913497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46488965769 + 32942976004 = 215613^2 + 181502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79431941773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79431921773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39715970886 + 39715970887.

It is an arithmetic number, because the mean of its divisors is an integer number (39715970887).

Almost surely, 2^79431941773 is an apocalyptic number.

It is an amenable number.

79431941773 is a deficient number, since it is larger than the sum of its proper divisors (1).

79431941773 is an equidigital number, since it uses as much as digits as its factorization.

79431941773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 55.

The spelling of 79431941773 in words is "seventy-nine billion, four hundred thirty-one million, nine hundred forty-one thousand, seven hundred seventy-three".