18723553331703 has 64 divisors (see below), whose sum is σ = 28882096128000. Its totient is φ = 10678337429760.

The previous prime is 18723553331641. The next prime is 18723553331713. The reversal of 18723553331703 is 30713335532781.

It is a happy number.

It is not a de Polignac number, because 18723553331703 - 2¹⁰ = 18723553330679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18723553331713) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12746226 + ... + 14139072.

It is an arithmetic number, because the mean of its divisors is an integer number (451282752000).

Almost surely, 2^{18723553331703} is an apocalyptic number.

18723553331703 is a deficient number, since it is larger than the sum of its proper divisors (10158542796297).

18723553331703 is a wasteful number, since it uses less digits than its factorization.

18723553331703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393172.

The product of its (nonzero) digits is 4762800, while the sum is 51.

The spelling of 18723553331703 in words is "eighteen trillion, seven hundred twenty-three billion, five hundred fifty-three million, three hundred thirty-one thousand, seven hundred three".