18234504159420 has 48 divisors (see below), whose sum is σ = 51056886172320. Its totient is φ = 4862508297216.

The previous prime is 18234504159187. The next prime is 18234504159457. The reversal of 18234504159420 is 2495140543281.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18234504159420.

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, 12130504 + ... + 13550576.

It is an arithmetic number, because the mean of its divisors is an integer number (1063685128590).

Almost surely, 2^{18234504159420} is an apocalyptic number.

18234504159420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18234504159420 is an abundant number, since it is smaller than the sum of its proper divisors (32822382012900).

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

18234504159420 is a wasteful number, since it uses less digits than its factorization.

18234504159420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634094 (or 1634092 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 18234504159420 in words is "eighteen trillion, two hundred thirty-four billion, five hundred four million, one hundred fifty-nine thousand, four hundred twenty".