196537549824 has 440 divisors, whose sum is σ = 731742694848. Its totient is φ = 51047055360.

The previous prime is 196537549823. The next prime is 196537549837. The reversal of 196537549824 is 428945735691.

196537549824 is a `hidden beast` number, since 1 + 9 + 6 + 5 + 3 + 7 + 549 + 82 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (196537549823) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6371302 + ... + 6402074.

Almost surely, 2^196537549824 is an apocalyptic number.

196537549824 is a gapful number since it is divisible by the number (14) 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 196537549824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365871347424).

196537549824 is an abundant number, since it is smaller than the sum of its proper divisors (535205145024).

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

196537549824 is a wasteful number, since it uses less digits than its factorization.

196537549824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30823 (or 30796 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 196537549824 in words is "one hundred ninety-six billion, five hundred thirty-seven million, five hundred forty-nine thousand, eight hundred twenty-four".