18458972282088 has 144 divisors (see below), whose sum is σ = 56821421950020. Its totient is φ = 5380752955392.

The previous prime is 18458972282077. The next prime is 18458972282089. The reversal of 18458972282088 is 88028227985481.

18458972282088 is a `hidden beast` number, since 1 + 8 + 458 + 9 + 72 + 2 + 8 + 20 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18409402821924 + 49569460164 = 4290618^2 + 222642^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (18458972282089) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26976681 + ... + 27652472.

Almost surely, 2^{18458972282088} is an apocalyptic number.

18458972282088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18458972282088 is an abundant number, since it is smaller than the sum of its proper divisors (38362449667932).

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

18458972282088 is a wasteful number, since it uses less digits than its factorization.

18458972282088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54629216 (or 54629190 counting only the distinct ones).

The product of its (nonzero) digits is 330301440, while the sum is 72.

The spelling of 18458972282088 in words is "eighteen trillion, four hundred fifty-eight billion, nine hundred seventy-two million, two hundred eighty-two thousand, eighty-eight".