12400027751557 has 8 divisors (see below), whose sum is σ = 12451705478784. Its totient is φ = 12348405386688.

The previous prime is 12400027751497. The next prime is 12400027751591. The reversal of 12400027751557 is 75515772000421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12400027751557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400027751597) 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, 13391668 + ... + 14287645.

It is an arithmetic number, because the mean of its divisors is an integer number (1556463184848).

Almost surely, 2^{12400027751557} is an apocalyptic number.

It is an amenable number.

12400027751557 is a deficient number, since it is larger than the sum of its proper divisors (51677727227).

12400027751557 is a wasteful number, since it uses less digits than its factorization.

12400027751557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27681179.

The product of its (nonzero) digits is 686000, while the sum is 46.

Adding to 12400027751557 its reverse (75515772000421), we get a palindrome (87915799751978).

The spelling of 12400027751557 in words is "twelve trillion, four hundred billion, twenty-seven million, seven hundred fifty-one thousand, five hundred fifty-seven".