997240250376 has 128 divisors (see below), whose sum is σ = 2843896406400. Its totient is φ = 323594818560.

The previous prime is 997240250371. The next prime is 997240250399. The reversal of 997240250376 is 673052042799.

997240250376 is a `hidden beast` number, since 9 + 9 + 7 + 240 + 25 + 0 + 376 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (997240250371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3923991 + ... + 4170393.

It is an arithmetic number, because the mean of its divisors is an integer number (22217940675).

Almost surely, 2^997240250376 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 997240250376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421948203200).

997240250376 is an abundant number, since it is smaller than the sum of its proper divisors (1846656156024).

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

997240250376 is a wasteful number, since it uses less digits than its factorization.

997240250376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246916 (or 246906 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 997240250376 in words is "nine hundred ninety-seven billion, two hundred forty million, two hundred fifty thousand, three hundred seventy-six".