201444151878097 has 2 divisors, whose sum is σ = 201444151878098. Its totient is φ = 201444151878096.

The previous prime is 201444151878077. The next prime is 201444151878113. The reversal of 201444151878097 is 790878151444102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197881586227521 + 3562565650576 = 14067039^2 + 1887476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201444151878097 is a prime.

It is a super-2 number, since 2×201444151878097² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201444151878017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100722075939048 + 100722075939049.

It is an arithmetic number, because the mean of its divisors is an integer number (100722075939049).

Almost surely, 2^{201444151878097} is an apocalyptic number.

It is an amenable number.

201444151878097 is a deficient number, since it is larger than the sum of its proper divisors (1).

201444151878097 is an equidigital number, since it uses as much as digits as its factorization.

201444151878097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 201444151878097 in words is "two hundred one trillion, four hundred forty-four billion, one hundred fifty-one million, eight hundred seventy-eight thousand, ninety-seven".