9997697683655 has 32 divisors (see below), whose sum is σ = 13657496444928. Its totient is φ = 6954633734400.

The previous prime is 9997697683639. The next prime is 9997697683657. The reversal of 9997697683655 is 5563867967999.

It is a happy number.

It is not a de Polignac number, because 9997697683655 - 2⁴ = 9997697683639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997697683657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33285707 + ... + 33584723.

It is an arithmetic number, because the mean of its divisors is an integer number (426796763904).

Almost surely, 2^{9997697683655} is an apocalyptic number.

9997697683655 is a deficient number, since it is larger than the sum of its proper divisors (3659798761273).

9997697683655 is a wasteful number, since it uses less digits than its factorization.

9997697683655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325487.

The product of its digits is 41664974400, while the sum is 89.

The spelling of 9997697683655 in words is "nine trillion, nine hundred ninety-seven billion, six hundred ninety-seven million, six hundred eighty-three thousand, six hundred fifty-five".