18314797670497 has 4 divisors (see below), whose sum is σ = 19392138709956. Its totient is φ = 17237456631040.

The previous prime is 18314797670489. The next prime is 18314797670509. The reversal of 18314797670497 is 79407679741381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6037615608336 + 12277182062161 = 2457156^2 + 3503881^2 .

It is not a de Polignac number, because 18314797670497 - 2³ = 18314797670489 is a prime.

It is a super-2 number, since 2×18314797670497² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18314797670797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538670519704 + ... + 538670519737.

It is an arithmetic number, because the mean of its divisors is an integer number (4848034677489).

Almost surely, 2^{18314797670497} is an apocalyptic number.

18314797670497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18314797670497 is a deficient number, since it is larger than the sum of its proper divisors (1077341039459).

18314797670497 is a wasteful number, since it uses less digits than its factorization.

18314797670497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077341039458.

The product of its (nonzero) digits is 448084224, while the sum is 73.

The spelling of 18314797670497 in words is "eighteen trillion, three hundred fourteen billion, seven hundred ninety-seven million, six hundred seventy thousand, four hundred ninety-seven".