12542533654 has 16 divisors (see below), whose sum is σ = 21503226528. Its totient is φ = 5374936512.

The previous prime is 12542533651. The next prime is 12542533667. The reversal of 12542533654 is 45633524521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542533651) 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, 192802 + ... + 249514.

It is an arithmetic number, because the mean of its divisors is an integer number (1343951658).

Almost surely, 2^12542533654 is an apocalyptic number.

12542533654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12542533654 is a deficient number, since it is larger than the sum of its proper divisors (8960692874).

12542533654 is a wasteful number, since it uses less digits than its factorization.

12542533654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72519.

The product of its digits is 432000, while the sum is 40.

The spelling of 12542533654 in words is "twelve billion, five hundred forty-two million, five hundred thirty-three thousand, six hundred fifty-four".