997582147650 has 192 divisors, whose sum is σ = 2999547302400. Its totient is φ = 241777224000.

The previous prime is 997582147553. The next prime is 997582147657. The reversal of 997582147650 is 56741285799.

997582147650 is a `hidden beast` number, since 9 + 9 + 7 + 582 + 1 + 47 + 6 + 5 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (997582147657) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 94722885 + ... + 94733415.

It is an arithmetic number, because the mean of its divisors is an integer number (15622642200).

Almost surely, 2^997582147650 is an apocalyptic number.

997582147650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 997582147650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499773651200).

997582147650 is an abundant number, since it is smaller than the sum of its proper divisors (2001965154750).

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

997582147650 is a wasteful number, since it uses less digits than its factorization.

997582147650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16942 (or 16931 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 63.

The spelling of 997582147650 in words is "nine hundred ninety-seven billion, five hundred eighty-two million, one hundred forty-seven thousand, six hundred fifty".