12531553511434 has 16 divisors (see below), whose sum is σ = 18900251678880. Its totient is φ = 6231551206320.

The previous prime is 12531553511431. The next prime is 12531553511443. The reversal of 12531553511434 is 43411535513521.

It is a happy number.

12531553511434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12531553511431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20089344 + ... + 20703739.

It is an arithmetic number, because the mean of its divisors is an integer number (1181265729930).

Almost surely, 2^{12531553511434} is an apocalyptic number.

12531553511434 is a deficient number, since it is larger than the sum of its proper divisors (6368698167446).

12531553511434 is a wasteful number, since it uses less digits than its factorization.

12531553511434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40793925.

The product of its digits is 540000, while the sum is 43.

The spelling of 12531553511434 in words is "twelve trillion, five hundred thirty-one billion, five hundred fifty-three million, five hundred eleven thousand, four hundred thirty-four".