197454025650 has 96 divisors (see below), whose sum is σ = 559879308288. Its totient is φ = 45113140800.

The previous prime is 197454025649. The next prime is 197454025661. The reversal of 197454025650 is 56520454791.

It is a self number, because there is not a number n which added to its sum of digits gives 197454025650.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2505345 + ... + 2582955.

It is an arithmetic number, because the mean of its divisors is an integer number (5832076128).

Almost surely, 2^197454025650 is an apocalyptic number.

197454025650 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 197454025650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279939654144).

197454025650 is an abundant number, since it is smaller than the sum of its proper divisors (362425282638).

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

197454025650 is a wasteful number, since it uses less digits than its factorization.

197454025650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80056 (or 80051 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 197454025650 in words is "one hundred ninety-seven billion, four hundred fifty-four million, twenty-five thousand, six hundred fifty".