12427146557 has 8 divisors (see below), whose sum is σ = 15037891776. Its totient is φ = 10025260992.

The previous prime is 12427146551. The next prime is 12427146619. The reversal of 12427146557 is 75564172421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12427146557 - 2³² = 8132179261 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 (12427146551) 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, 52214783 + ... + 52215020.

It is an arithmetic number, because the mean of its divisors is an integer number (1879736472).

Almost surely, 2^12427146557 is an apocalyptic number.

12427146557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12427146557 is a deficient number, since it is larger than the sum of its proper divisors (2610745219).

12427146557 is a wasteful number, since it uses less digits than its factorization.

12427146557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104429827.

The product of its digits is 470400, while the sum is 44.

The spelling of 12427146557 in words is "twelve billion, four hundred twenty-seven million, one hundred forty-six thousand, five hundred fifty-seven".