18295199873551 has 2 divisors, whose sum is σ = 18295199873552. Its totient is φ = 18295199873550.

The previous prime is 18295199873537. The next prime is 18295199873651. The reversal of 18295199873551 is 15537899159281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18295199873551 - 2¹¹ = 18295199871503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18295199873651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9147599936775 + 9147599936776.

It is an arithmetic number, because the mean of its divisors is an integer number (9147599936776).

Almost surely, 2^{18295199873551} is an apocalyptic number.

18295199873551 is a deficient number, since it is larger than the sum of its proper divisors (1).

18295199873551 is an equidigital number, since it uses as much as digits as its factorization.

18295199873551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944000, while the sum is 73.

The spelling of 18295199873551 in words is "eighteen trillion, two hundred ninety-five billion, one hundred ninety-nine million, eight hundred seventy-three thousand, five hundred fifty-one".