997688034044 has 12 divisors (see below), whose sum is σ = 1880258218104. Its totient is φ = 460471400304.

The previous prime is 997688034041. The next prime is 997688034073. The reversal of 997688034044 is 440430886799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997688034041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9593154122 + ... + 9593154225.

It is an arithmetic number, because the mean of its divisors is an integer number (156688184842).

Almost surely, 2^997688034044 is an apocalyptic number.

It is an amenable number.

997688034044 is a deficient number, since it is larger than the sum of its proper divisors (882570184060).

997688034044 is a wasteful number, since it uses less digits than its factorization.

997688034044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19186308364 (or 19186308362 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 997688034044 in words is "nine hundred ninety-seven billion, six hundred eighty-eight million, thirty-four thousand, forty-four".