196993121647788 has 288 divisors, whose sum is σ = 553507381260288. Its totient is φ = 58799499264000.

The previous prime is 196993121647787. The next prime is 196993121647807. The reversal of 196993121647788 is 887746121399691.

196993121647788 is a `hidden beast` number, since 1 + 9 + 6 + 99 + 31 + 21 + 6 + 477 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (196993121647787) 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, 277528431 + ... + 278237337.

It is an arithmetic number, because the mean of its divisors is an integer number (1921900629376).

Almost surely, 2^{196993121647788} is an apocalyptic number.

196993121647788 is a gapful number since it is divisible by the number (18) 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 196993121647788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276753690630144).

196993121647788 is an abundant number, since it is smaller than the sum of its proper divisors (356514259612500).

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

196993121647788 is a wasteful number, since it uses less digits than its factorization.

196993121647788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709213 (or 709208 counting only the distinct ones).

The product of its digits is 1975228416, while the sum is 81.

The spelling of 196993121647788 in words is "one hundred ninety-six trillion, nine hundred ninety-three billion, one hundred twenty-one million, six hundred forty-seven thousand, seven hundred eighty-eight".