20150111253 has 8 divisors (see below), whose sum is σ = 26903173600. Its totient is φ = 13415228208.

The previous prime is 20150111167. The next prime is 20150111263. The reversal of 20150111253 is 35211105102.

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

It is not a de Polignac number, because 20150111253 - 2⁹ = 20150110741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20150111263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4542238 + ... + 4546671.

It is an arithmetic number, because the mean of its divisors is an integer number (3362896700).

Almost surely, 2^20150111253 is an apocalyptic number.

It is an amenable number.

20150111253 is a deficient number, since it is larger than the sum of its proper divisors (6753062347).

20150111253 is an equidigital number, since it uses as much as digits as its factorization.

20150111253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9089651.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 20150111253 its reverse (35211105102), we get a palindrome (55361216355).

The spelling of 20150111253 in words is "twenty billion, one hundred fifty million, one hundred eleven thousand, two hundred fifty-three".