97663943515 has 24 divisors (see below), whose sum is σ = 119830124592. Its totient is φ = 76413382080.

The previous prime is 97663943479. The next prime is 97663943557. The reversal of 97663943515 is 51534936679.

It is a happy number.

It is not a de Polignac number, because 97663943515 - 2⁷ = 97663943387 is a prime.

It is a super-2 number, since 2×97663943515² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97663943515.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22209297 + ... + 22213693.

It is an arithmetic number, because the mean of its divisors is an integer number (4992921858).

Almost surely, 2^97663943515 is an apocalyptic number.

97663943515 is a deficient number, since it is larger than the sum of its proper divisors (22166181077).

97663943515 is a wasteful number, since it uses less digits than its factorization.

97663943515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6507 (or 6460 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 58.

The spelling of 97663943515 in words is "ninety-seven billion, six hundred sixty-three million, nine hundred forty-three thousand, five hundred fifteen".