18497768893049 has 16 divisors (see below), whose sum is σ = 18618604462080. Its totient is φ = 18377099296320.

The previous prime is 18497768892989. The next prime is 18497768893057. The reversal of 18497768893049 is 94039886779481.

It is a cyclic number.

It is not a de Polignac number, because 18497768893049 - 2³⁶ = 18429049416313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18497768896049) 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 in 15 ways as a sum of consecutive naturals, for example, 1612562384 + ... + 1612573854.

It is an arithmetic number, because the mean of its divisors is an integer number (1163662778880).

Almost surely, 2^{18497768893049} is an apocalyptic number.

It is an amenable number.

18497768893049 is a deficient number, since it is larger than the sum of its proper divisors (120835569031).

18497768893049 is a wasteful number, since it uses less digits than its factorization.

18497768893049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17800.

The product of its (nonzero) digits is 5267275776, while the sum is 83.

The spelling of 18497768893049 in words is "eighteen trillion, four hundred ninety-seven billion, seven hundred sixty-eight million, eight hundred ninety-three thousand, forty-nine".