196918072562501 has 4 divisors (see below), whose sum is σ = 196956676385004. Its totient is φ = 196879468740000.

The previous prime is 196918072562473. The next prime is 196918072562537. The reversal of 196918072562501 is 105265270819691.

196918072562501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 14032750²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77200622500 + 196840871940001 = 277850^2 + 14029999^2 .

It is a cyclic number.

It is not a de Polignac number, because 196918072562501 - 2³⁴ = 196900892693317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196918072562591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19301903600 + ... + 19301913801.

It is an arithmetic number, because the mean of its divisors is an integer number (49239169096251).

Almost surely, 2^{196918072562501} is an apocalyptic number.

It is an amenable number.

196918072562501 is a deficient number, since it is larger than the sum of its proper divisors (38603822503).

196918072562501 is an equidigital number, since it uses as much as digits as its factorization.

196918072562501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38603822502.

The product of its (nonzero) digits is 16329600, while the sum is 62.

The spelling of 196918072562501 in words is "one hundred ninety-six trillion, nine hundred eighteen billion, seventy-two million, five hundred sixty-two thousand, five hundred one".