997525178600832 has 512 divisors, whose sum is σ = 3417709135334400. Its totient is φ = 280530230722560.

The previous prime is 997525178600711. The next prime is 997525178600833. The reversal of 997525178600832 is 238006871525799.

997525178600832 is a `hidden beast` number, since 9 + 9 + 7 + 5 + 2 + 5 + 1 + 7 + 8 + 600 + 8 + 3 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997525178600833) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 866538658 + ... + 867689054.

It is an arithmetic number, because the mean of its divisors is an integer number (6675213154950).

Almost surely, 2^{997525178600832} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997525178600832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708854567667200).

997525178600832 is an abundant number, since it is smaller than the sum of its proper divisors (2420183956733568).

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

997525178600832 is a wasteful number, since it uses less digits than its factorization.

997525178600832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150991 (or 1150973 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 72.

The spelling of 997525178600832 in words is "nine hundred ninety-seven trillion, five hundred twenty-five billion, one hundred seventy-eight million, six hundred thousand, eight hundred thirty-two".