196537398400 has 384 divisors, whose sum is σ = 595159228800. Its totient is φ = 62626037760.

The previous prime is 196537398397. The next prime is 196537398413. The reversal of 196537398400 is 4893735691.

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, 22552444 + ... + 22561156.

It is an arithmetic number, because the mean of its divisors is an integer number (1549893825).

Almost surely, 2^196537398400 is an apocalyptic number.

196537398400 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 196537398400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297579614400).

196537398400 is an abundant number, since it is smaller than the sum of its proper divisors (398621830400).

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

196537398400 is a wasteful number, since it uses less digits than its factorization.

196537398400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816 (or 8799 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 196537398400 in words is "one hundred ninety-six billion, five hundred thirty-seven million, three hundred ninety-eight thousand, four hundred".