197418045440 has 416 divisors, whose sum is σ = 616437098496. Its totient is φ = 58846740480.

The previous prime is 197418045401. The next prime is 197418045443. The reversal of 197418045440 is 44540814791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197418045443) 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, 36267359 + ... + 36272801.

Almost surely, 2^197418045440 is an apocalyptic number.

197418045440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197418045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308218549248).

197418045440 is an abundant number, since it is smaller than the sum of its proper divisors (419019053056).

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

197418045440 is a wasteful number, since it uses less digits than its factorization.

197418045440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513 (or 5491 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 197418045440 in words is "one hundred ninety-seven billion, four hundred eighteen million, forty-five thousand, four hundred forty".