18453377697 has 8 divisors (see below), whose sum is σ = 24614838144. Its totient is φ = 12297084528.

The previous prime is 18453377681. The next prime is 18453377699. The reversal of 18453377697 is 79677335481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18453377697 - 2⁴ = 18453377681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18453377697.

It is not an unprimeable number, because it can be changed into a prime (18453377699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283478 + ... + 1297775.

It is an arithmetic number, because the mean of its divisors is an integer number (3076854768).

Almost surely, 2^18453377697 is an apocalyptic number.

It is an amenable number.

18453377697 is a deficient number, since it is larger than the sum of its proper divisors (6161460447).

18453377697 is a wasteful number, since it uses less digits than its factorization.

18453377697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583639.

The product of its digits is 26671680, while the sum is 60.

The spelling of 18453377697 in words is "eighteen billion, four hundred fifty-three million, three hundred seventy-seven thousand, six hundred ninety-seven".