18030989623542 has 32 divisors (see below), whose sum is σ = 41420794560000. Its totient is φ = 5125823322048.

The previous prime is 18030989623519. The next prime is 18030989623589. The reversal of 18030989623542 is 24532698903081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078658167 + ... + 1078674882.

It is an arithmetic number, because the mean of its divisors is an integer number (1294399830000).

Almost surely, 2^{18030989623542} is an apocalyptic number.

18030989623542 is an abundant number, since it is smaller than the sum of its proper divisors (23389804936458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18030989623542 is a wasteful number, since it uses less digits than its factorization.

18030989623542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157333260.

The product of its (nonzero) digits is 22394880, while the sum is 60.

The spelling of 18030989623542 in words is "eighteen trillion, thirty billion, nine hundred eighty-nine million, six hundred twenty-three thousand, five hundred forty-two".