79357142873 has 2 divisors, whose sum is σ = 79357142874. Its totient is φ = 79357142872.

The previous prime is 79357142861. The next prime is 79357142929. The reversal of 79357142873 is 37824175397.

It is a happy number.

It is an a-pointer prime, because the next prime (79357142929) can be obtained adding 79357142873 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57452254864 + 21904888009 = 239692^2 + 148003^2 .

It is a cyclic number.

It is not a de Polignac number, because 79357142873 - 2⁸ = 79357142617 is a prime.

It is a super-2 number, since 2×79357142873² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79357142773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39678571436 + 39678571437.

It is an arithmetic number, because the mean of its divisors is an integer number (39678571437).

Almost surely, 2^79357142873 is an apocalyptic number.

It is an amenable number.

79357142873 is a deficient number, since it is larger than the sum of its proper divisors (1).

79357142873 is an equidigital number, since it uses as much as digits as its factorization.

79357142873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 56.

The spelling of 79357142873 in words is "seventy-nine billion, three hundred fifty-seven million, one hundred forty-two thousand, eight hundred seventy-three".