197847967650 has 192 divisors, whose sum is σ = 516777781248. Its totient is φ = 49996840960.

The previous prime is 197847967649. The next prime is 197847967657. The reversal of 197847967650 is 56769748791.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (197847967657) 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, 201269059 + ... + 201270041.

It is an arithmetic number, because the mean of its divisors is an integer number (2691550944).

Almost surely, 2^197847967650 is an apocalyptic number.

197847967650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197847967650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258388890624).

197847967650 is an abundant number, since it is smaller than the sum of its proper divisors (318929813598).

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

197847967650 is a wasteful number, since it uses less digits than its factorization.

197847967650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 69.

The spelling of 197847967650 in words is "one hundred ninety-seven billion, eight hundred forty-seven million, nine hundred sixty-seven thousand, six hundred fifty".