18550335071 has 2 divisors, whose sum is σ = 18550335072. Its totient is φ = 18550335070.

The previous prime is 18550335049. The next prime is 18550335073. The reversal of 18550335071 is 17053305581.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18550335071 - 2²⁶ = 18483226207 is a prime.

It is a super-2 number, since 2×18550335071² (a number of 21 digits) contains 22 as substring.

Together with 18550335073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18550335073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9275167535 + 9275167536.

It is an arithmetic number, because the mean of its divisors is an integer number (9275167536).

Almost surely, 2^18550335071 is an apocalyptic number.

18550335071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18550335071 is an equidigital number, since it uses as much as digits as its factorization.

18550335071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 18550335071 in words is "eighteen billion, five hundred fifty million, three hundred thirty-five thousand, seventy-one".