196490433551 has 8 divisors (see below), whose sum is σ = 197160437760. Its totient is φ = 195821441208.

The previous prime is 196490433533. The next prime is 196490433577. The reversal of 196490433551 is 155334094691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196490433551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196490433551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196480433551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137090 + ... + 641696.

It is an arithmetic number, because the mean of its divisors is an integer number (24645054720).

Almost surely, 2^196490433551 is an apocalyptic number.

196490433551 is a deficient number, since it is larger than the sum of its proper divisors (670004209).

196490433551 is an equidigital number, since it uses as much as digits as its factorization.

196490433551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505933.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 196490433551 in words is "one hundred ninety-six billion, four hundred ninety million, four hundred thirty-three thousand, five hundred fifty-one".