12540557454 has 8 divisors (see below), whose sum is σ = 25081114920. Its totient is φ = 4180185816.

The previous prime is 12540557431. The next prime is 12540557461. The reversal of 12540557454 is 45475504521.

It is a sphenic number, since it is the product of 3 distinct primes.

12540557454 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045046449 + ... + 1045046460.

It is an arithmetic number, because the mean of its divisors is an integer number (3135139365).

Almost surely, 2^12540557454 is an apocalyptic number.

12540557454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12540557454 is a wasteful number, since it uses less digits than its factorization.

12540557454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090092914.

The product of its (nonzero) digits is 560000, while the sum is 42.

The spelling of 12540557454 in words is "twelve billion, five hundred forty million, five hundred fifty-seven thousand, four hundred fifty-four".