194535872801 has 2 divisors, whose sum is σ = 194535872802. Its totient is φ = 194535872800.

The previous prime is 194535872753. The next prime is 194535872803. The reversal of 194535872801 is 108278535491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102031691776 + 92504181025 = 319424^2 + 304145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194535872801 is a prime.

Together with 194535872803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194535872803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97267936400 + 97267936401.

It is an arithmetic number, because the mean of its divisors is an integer number (97267936401).

Almost surely, 2^194535872801 is an apocalyptic number.

It is an amenable number.

194535872801 is a deficient number, since it is larger than the sum of its proper divisors (1).

194535872801 is an equidigital number, since it uses as much as digits as its factorization.

194535872801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 194535872801 in words is "one hundred ninety-four billion, five hundred thirty-five million, eight hundred seventy-two thousand, eight hundred one".