79699954282469 has 2 divisors, whose sum is σ = 79699954282470. Its totient is φ = 79699954282468.

The previous prime is 79699954282451. The next prime is 79699954282493. The reversal of 79699954282469 is 96428245999697.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72498583452100 + 7201370830369 = 8514610^2 + 2683537^2 .

It is a cyclic number.

It is not a de Polignac number, because 79699954282469 - 2⁴⁰ = 78600442654693 is a prime.

It is a super-2 number, since 2×79699954282469² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79699954282369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39849977141234 + 39849977141235.

It is an arithmetic number, because the mean of its divisors is an integer number (39849977141235).

Almost surely, 2^{79699954282469} is an apocalyptic number.

It is an amenable number.

79699954282469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79699954282469 is an equidigital number, since it uses as much as digits as its factorization.

79699954282469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38093690880, while the sum is 89.

The spelling of 79699954282469 in words is "seventy-nine trillion, six hundred ninety-nine billion, nine hundred fifty-four million, two hundred eighty-two thousand, four hundred sixty-nine".