2546381105857 has 4 divisors (see below), whose sum is σ = 2680401164080. Its totient is φ = 2412361047636.

The previous prime is 2546381105843. The next prime is 2546381105893. The reversal of 2546381105857 is 7585011836452.

It is a happy number.

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 2546381105857 - 2²³ = 2546372717249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2546381105798 and 2546381105807.

It is not an unprimeable number, because it can be changed into a prime (2546381105897) 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, 67010029083 + ... + 67010029120.

It is an arithmetic number, because the mean of its divisors is an integer number (670100291020).

Almost surely, 2^{2546381105857} is an apocalyptic number.

It is an amenable number.

2546381105857 is a deficient number, since it is larger than the sum of its proper divisors (134020058223).

2546381105857 is a wasteful number, since it uses less digits than its factorization.

2546381105857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134020058222.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 2546381105857 in words is "two trillion, five hundred forty-six billion, three hundred eighty-one million, one hundred five thousand, eight hundred fifty-seven".