997393176576 has 72 divisors (see below), whose sum is σ = 2880654662340. Its totient is φ = 332464386048.

The previous prime is 997393176551. The next prime is 997393176589. The reversal of 997393176576 is 675671393799.

997393176576 is a `hidden beast` number, since 9 + 9 + 7 + 39 + 3 + 17 + 6 + 576 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27037590 + ... + 27074453.

Almost surely, 2^997393176576 is an apocalyptic number.

997393176576 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

997393176576 is an abundant number, since it is smaller than the sum of its proper divisors (1883261485764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997393176576 is a wasteful number, since it uses less digits than its factorization.

997393176576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54112071 (or 54112048 counting only the distinct ones).

The product of its digits is 405076140, while the sum is 72.

The spelling of 997393176576 in words is "nine hundred ninety-seven billion, three hundred ninety-three million, one hundred seventy-six thousand, five hundred seventy-six".