79998090001 has 2 divisors, whose sum is σ = 79998090002. Its totient is φ = 79998090000.

The previous prime is 79998089999. The next prime is 79998090037. The reversal of 79998090001 is 10009089997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64528700625 + 15469389376 = 254025^2 + 124376^2 .

It is a cyclic number.

It is not a de Polignac number, because 79998090001 - 2¹ = 79998089999 is a prime.

Together with 79998089999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79998090061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39999045000 + 39999045001.

It is an arithmetic number, because the mean of its divisors is an integer number (39999045001).

Almost surely, 2^79998090001 is an apocalyptic number.

It is an amenable number.

79998090001 is a deficient number, since it is larger than the sum of its proper divisors (1).

79998090001 is an equidigital number, since it uses as much as digits as its factorization.

79998090001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 79998090001 in words is "seventy-nine billion, nine hundred ninety-eight million, ninety thousand, one".