18141006557 has 2 divisors, whose sum is σ = 18141006558. Its totient is φ = 18141006556.

The previous prime is 18141006479. The next prime is 18141006571. The reversal of 18141006557 is 75560014181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13953751876 + 4187254681 = 118126^2 + 64709^2 .

It is a cyclic number.

It is not a de Polignac number, because 18141006557 - 2²⁴ = 18124229341 is a prime.

It is a super-2 number, since 2×18141006557² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18141006557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18141005557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070503278 + 9070503279.

It is an arithmetic number, because the mean of its divisors is an integer number (9070503279).

Almost surely, 2^18141006557 is an apocalyptic number.

It is an amenable number.

18141006557 is a deficient number, since it is larger than the sum of its proper divisors (1).

18141006557 is an equidigital number, since it uses as much as digits as its factorization.

18141006557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 18141006557 in words is "eighteen billion, one hundred forty-one million, six thousand, five hundred fifty-seven".