18251423028653 has 2 divisors, whose sum is σ = 18251423028654. Its totient is φ = 18251423028652.

The previous prime is 18251423028541. The next prime is 18251423028697. The reversal of 18251423028653 is 35682032415281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11783037965449 + 6468385063204 = 3432643^2 + 2543302^2 .

It is a cyclic number.

It is not a de Polignac number, because 18251423028653 - 2²⁸ = 18251154593197 is a prime.

It is a super-2 number, since 2×18251423028653² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18251423028953) 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 as a sum of consecutive naturals, namely, 9125711514326 + 9125711514327.

It is an arithmetic number, because the mean of its divisors is an integer number (9125711514327).

Almost surely, 2^{18251423028653} is an apocalyptic number.

It is an amenable number.

18251423028653 is a deficient number, since it is larger than the sum of its proper divisors (1).

18251423028653 is an equidigital number, since it uses as much as digits as its factorization.

18251423028653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 18251423028653 in words is "eighteen trillion, two hundred fifty-one billion, four hundred twenty-three million, twenty-eight thousand, six hundred fifty-three".