18497773071 has 6 divisors (see below), whose sum is σ = 26719005560. Its totient is φ = 12331848708.

The previous prime is 18497773037. The next prime is 18497773079. The reversal of 18497773071 is 17037779481.

It is a happy number.

18497773071 is a `hidden beast` number, since 18 + 497 + 7 + 73 + 0 + 71 = 666.

It is not a de Polignac number, because 18497773071 - 2¹⁴ = 18497756687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18497772999 and 18497773017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18497773079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027654051 + ... + 1027654068.

Almost surely, 2^18497773071 is an apocalyptic number.

18497773071 is a deficient number, since it is larger than the sum of its proper divisors (8221232489).

18497773071 is a wasteful number, since it uses less digits than its factorization.

18497773071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055308125 (or 2055308122 counting only the distinct ones).

The product of its (nonzero) digits is 2074464, while the sum is 54.

The spelling of 18497773071 in words is "eighteen billion, four hundred ninety-seven million, seven hundred seventy-three thousand, seventy-one".