2478127841281 has 4 divisors (see below), whose sum is σ = 2501287914672. Its totient is φ = 2454967767892.

The previous prime is 2478127841279. The next prime is 2478127841309. The reversal of 2478127841281 is 1821487218742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2478127841281 - 2¹ = 2478127841279 is a prime.

It is a super-2 number, since 2×2478127841281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478127841221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11580036535 + ... + 11580036748.

It is an arithmetic number, because the mean of its divisors is an integer number (625321978668).

Almost surely, 2^{2478127841281} is an apocalyptic number.

It is an amenable number.

2478127841281 is a deficient number, since it is larger than the sum of its proper divisors (23160073391).

2478127841281 is a wasteful number, since it uses less digits than its factorization.

2478127841281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23160073390.

The product of its digits is 3211264, while the sum is 55.

The spelling of 2478127841281 in words is "two trillion, four hundred seventy-eight billion, one hundred twenty-seven million, eight hundred forty-one thousand, two hundred eighty-one".