97143694369 has 4 divisors (see below), whose sum is σ = 99402850096. Its totient is φ = 94884538644.

The previous prime is 97143694339. The next prime is 97143694381. The reversal of 97143694369 is 96349634179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97143694369 is a prime.

It is a super-2 number, since 2×97143694369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97143694339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129577799 + ... + 1129577884.

It is an arithmetic number, because the mean of its divisors is an integer number (24850712524).

Almost surely, 2^97143694369 is an apocalyptic number.

It is an amenable number.

97143694369 is a deficient number, since it is larger than the sum of its proper divisors (2259155727).

97143694369 is a wasteful number, since it uses less digits than its factorization.

97143694369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259155726.

The product of its digits is 26453952, while the sum is 61.

The spelling of 97143694369 in words is "ninety-seven billion, one hundred forty-three million, six hundred ninety-four thousand, three hundred sixty-nine".