12542100035440 has 40 divisors (see below), whose sum is σ = 30875699208240. Its totient is φ = 4721731777536.

The previous prime is 12542100035429. The next prime is 12542100035453. The reversal of 12542100035440 is 4453000124521.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4611064830 + ... + 4611067549.

It is an arithmetic number, because the mean of its divisors is an integer number (771892480206).

Almost surely, 2^{12542100035440} is an apocalyptic number.

12542100035440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12542100035440 is an abundant number, since it is smaller than the sum of its proper divisors (18333599172800).

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

12542100035440 is a wasteful number, since it uses less digits than its factorization.

12542100035440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222132409 (or 9222132403 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12542100035440 its reverse (4453000124521), we get a palindrome (16995100159961).

The spelling of 12542100035440 in words is "twelve trillion, five hundred forty-two billion, one hundred million, thirty-five thousand, four hundred forty".