997713491040 has 192 divisors, whose sum is σ = 3990854085120. Its totient is φ = 228048791040.

The previous prime is 997713491039. The next prime is 997713491111. The reversal of 997713491040 is 40194317799.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16466346 + ... + 16526825.

It is an arithmetic number, because the mean of its divisors is an integer number (20785698360).

Almost surely, 2^997713491040 is an apocalyptic number.

997713491040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

997713491040 is an abundant number, since it is smaller than the sum of its proper divisors (2993140594080).

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

997713491040 is a wasteful number, since it uses less digits than its factorization.

997713491040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32993202 (or 32993188 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 997713491040 in words is "nine hundred ninety-seven billion, seven hundred thirteen million, four hundred ninety-one thousand, forty".