18497660355 has 24 divisors (see below), whose sum is σ = 32129585280. Its totient is φ = 9844811520.

The previous prime is 18497660347. The next prime is 18497660359. The reversal of 18497660355 is 55306679481.

It is not a de Polignac number, because 18497660355 - 2³ = 18497660347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18497660359) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407526 + ... + 450635.

It is an arithmetic number, because the mean of its divisors is an integer number (1338732720).

Almost surely, 2^18497660355 is an apocalyptic number.

18497660355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18497660355 is a deficient number, since it is larger than the sum of its proper divisors (13631924925).

18497660355 is a wasteful number, since it uses less digits than its factorization.

18497660355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858651 (or 858648 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 18497660355 in words is "eighteen billion, four hundred ninety-seven million, six hundred sixty thousand, three hundred fifty-five".