12531573454 has 16 divisors (see below), whose sum is σ = 18920595456. Its totient is φ = 6224751000.

The previous prime is 12531573451. The next prime is 12531573521. The reversal of 12531573454 is 45437513521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531573451) 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, 642019 + ... + 661249.

It is an arithmetic number, because the mean of its divisors is an integer number (1182537216).

Almost surely, 2^12531573454 is an apocalyptic number.

12531573454 is a deficient number, since it is larger than the sum of its proper divisors (6389022002).

12531573454 is a wasteful number, since it uses less digits than its factorization.

12531573454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21351.

The product of its digits is 252000, while the sum is 40.

The spelling of 12531573454 in words is "twelve billion, five hundred thirty-one million, five hundred seventy-three thousand, four hundred fifty-four".