12540405153 has 16 divisors (see below), whose sum is σ = 17177653760. Its totient is φ = 8131850496.

The previous prime is 12540405151. The next prime is 12540405167. The reversal of 12540405153 is 35150404521.

It is not a de Polignac number, because 12540405153 - 2¹ = 12540405151 is a prime.

It is a super-2 number, since 2×12540405153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12540405153.

It is not an unprimeable number, because it can be changed into a prime (12540405151) 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, 395088 + ... + 425646.

It is an arithmetic number, because the mean of its divisors is an integer number (1073603360).

Almost surely, 2^12540405153 is an apocalyptic number.

It is an amenable number.

12540405153 is a deficient number, since it is larger than the sum of its proper divisors (4637248607).

12540405153 is a wasteful number, since it uses less digits than its factorization.

12540405153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34296.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 12540405153 its reverse (35150404521), we get a palindrome (47690809674).

The spelling of 12540405153 in words is "twelve billion, five hundred forty million, four hundred five thousand, one hundred fifty-three".