28121155112182 has 32 divisors (see below), whose sum is σ = 48449550862080. Its totient is φ = 12106788936480.

The previous prime is 28121155112179. The next prime is 28121155112189.

28121155112182 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×28121155112182³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28121155112189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5965233 + ... + 9582604.

It is an arithmetic number, because the mean of its divisors is an integer number (1514048464440).

Almost surely, 2^{28121155112182} is an apocalyptic number.

28121155112182 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28121155112182 is a deficient number, since it is larger than the sum of its proper divisors (20328395749898).

28121155112182 is a wasteful number, since it uses less digits than its factorization.

28121155112182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15552196.

The product of its digits is 25600, while the sum is 40.

It can be divided in two parts, 2812115 and 5112182, that added together give a palindrome (7924297).

The spelling of 28121155112182 in words is "twenty-eight trillion, one hundred twenty-one billion, one hundred fifty-five million, one hundred twelve thousand, one hundred eighty-two".