18011510542 has 16 divisors (see below), whose sum is σ = 28195493760. Its totient is φ = 8613111672.

The previous prime is 18011510521. The next prime is 18011510593. The reversal of 18011510542 is 24501511081.

It is a self number, because there is not a number n which added to its sum of digits gives 18011510542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434809 + ... + 474427.

It is an arithmetic number, because the mean of its divisors is an integer number (1762218360).

Almost surely, 2^18011510542 is an apocalyptic number.

18011510542 is a deficient number, since it is larger than the sum of its proper divisors (10183983218).

18011510542 is a wasteful number, since it uses less digits than its factorization.

18011510542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49527.

The product of its (nonzero) digits is 1600, while the sum is 28.

The spelling of 18011510542 in words is "eighteen billion, eleven million, five hundred ten thousand, five hundred forty-two".