12090272508 has 72 divisors (see below), whose sum is σ = 32203626000. Its totient is φ = 3813993216.

The previous prime is 12090272503. The next prime is 12090272533. The reversal of 12090272508 is 80527209021.

12090272508 is a `hidden beast` number, since 120 + 9 + 0 + 27 + 2 + 508 = 666.

It is a super-2 number, since 2×12090272508² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090272501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 684168 + ... + 701616.

Almost surely, 2^12090272508 is an apocalyptic number.

12090272508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12090272508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16101813000).

12090272508 is an abundant number, since it is smaller than the sum of its proper divisors (20113353492).

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

12090272508 is a wasteful number, since it uses less digits than its factorization.

12090272508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18491 (or 18486 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 12090272508 in words is "twelve billion, ninety million, two hundred seventy-two thousand, five hundred eight".