18387532652122 has 8 divisors (see below), whose sum is σ = 27584071276500. Its totient is φ = 9192842226624.

The previous prime is 18387532652101. The next prime is 18387532652123. The reversal of 18387532652122 is 22125623578381.

It can be written as a sum of positive squares in 2 ways, for example, as 17429798359801 + 957734292321 = 4174901^2 + 978639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18387532652122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18387532652123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462024847 + ... + 462064642.

Almost surely, 2^{18387532652122} is an apocalyptic number.

18387532652122 is a deficient number, since it is larger than the sum of its proper divisors (9196538624378).

18387532652122 is an equidigital number, since it uses as much as digits as its factorization.

18387532652122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924099440.

The product of its digits is 9676800, while the sum is 55.

The spelling of 18387532652122 in words is "eighteen trillion, three hundred eighty-seven billion, five hundred thirty-two million, six hundred fifty-two thousand, one hundred twenty-two".