79827841469 has 2 divisors, whose sum is σ = 79827841470. Its totient is φ = 79827841468.

The previous prime is 79827841453. The next prime is 79827841519. The reversal of 79827841469 is 96414872897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79545433444 + 282408025 = 282038^2 + 16805^2 .

It is a cyclic number.

It is not a de Polignac number, because 79827841469 - 2⁴ = 79827841453 is a prime.

It is a super-2 number, since 2×79827841469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79827841969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39913920734 + 39913920735.

It is an arithmetic number, because the mean of its divisors is an integer number (39913920735).

Almost surely, 2^79827841469 is an apocalyptic number.

It is an amenable number.

79827841469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79827841469 is an equidigital number, since it uses as much as digits as its factorization.

79827841469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48771072, while the sum is 65.

The spelling of 79827841469 in words is "seventy-nine billion, eight hundred twenty-seven million, eight hundred forty-one thousand, four hundred sixty-nine".