12540115510 has 32 divisors (see below), whose sum is σ = 24327293760. Its totient is φ = 4626622848.

The previous prime is 12540115493. The next prime is 12540115513. The reversal of 12540115510 is 1551104521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540115513) 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, 134904 + ... + 208036.

It is an arithmetic number, because the mean of its divisors is an integer number (760227930).

Almost surely, 2^12540115510 is an apocalyptic number.

12540115510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12540115510 is a deficient number, since it is larger than the sum of its proper divisors (11787178250).

12540115510 is a wasteful number, since it uses less digits than its factorization.

12540115510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74472.

The product of its (nonzero) digits is 1000, while the sum is 25.

It can be divided in two parts, 1254011 and 5510, that added together give a palindrome (1259521).

The spelling of 12540115510 in words is "twelve billion, five hundred forty million, one hundred fifteen thousand, five hundred ten".