18623215231005 has 64 divisors (see below), whose sum is σ = 37153495627776. Its totient is φ = 7738724448000.

The previous prime is 18623215230953. The next prime is 18623215231013. The reversal of 18623215231005 is 50013251232681.

It is not a de Polignac number, because 18623215231005 - 2¹⁶ = 18623215165469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10509975 + ... + 12153435.

It is an arithmetic number, because the mean of its divisors is an integer number (580523369184).

Almost surely, 2^{18623215231005} is an apocalyptic number.

18623215231005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18623215231005 is a deficient number, since it is larger than the sum of its proper divisors (18530280396771).

18623215231005 is a wasteful number, since it uses less digits than its factorization.

18623215231005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653298.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 18623215231005 its reverse (50013251232681), we get a palindrome (68636466463686).

The spelling of 18623215231005 in words is "eighteen trillion, six hundred twenty-three billion, two hundred fifteen million, two hundred thirty-one thousand, five".