997453182940 has 24 divisors (see below), whose sum is σ = 2094843314592. Its totient is φ = 398944772160.

The previous prime is 997453182923. The next prime is 997453182941. The reversal of 997453182940 is 49281354799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997453182941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056696 + ... + 2494975.

It is an arithmetic number, because the mean of its divisors is an integer number (87285138108).

Almost surely, 2^997453182940 is an apocalyptic number.

It is an amenable number.

997453182940 is an abundant number, since it is smaller than the sum of its proper divisors (1097390131652).

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

997453182940 is a wasteful number, since it uses less digits than its factorization.

997453182940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562637 (or 4562635 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 997453182940 in words is "nine hundred ninety-seven billion, four hundred fifty-three million, one hundred eighty-two thousand, nine hundred forty".