12573178542 has 24 divisors (see below), whose sum is σ = 27243955440. Its totient is φ = 4190741280.

The previous prime is 12573178523. The next prime is 12573178573. The reversal of 12573178542 is 24587137521.

12573178542 is a `hidden beast` number, since 1 + 2 + 5 + 7 + 31 + 78 + 542 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423567 + ... + 452277.

It is an arithmetic number, because the mean of its divisors is an integer number (1135164810).

Almost surely, 2^12573178542 is an apocalyptic number.

12573178542 is an abundant number, since it is smaller than the sum of its proper divisors (14670776898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12573178542 is a wasteful number, since it uses less digits than its factorization.

12573178542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53048 (or 53045 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The spelling of 12573178542 in words is "twelve billion, five hundred seventy-three million, one hundred seventy-eight thousand, five hundred forty-two".