2581842645746 has 32 divisors (see below), whose sum is σ = 4833612258048. Its totient is φ = 1007002543680.

The previous prime is 2581842645731. The next prime is 2581842645763. The reversal of 2581842645746 is 6475462481852.

It is a happy number.

It is a super-2 number, since 2×2581842645746² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99888125 + ... + 99913968.

It is an arithmetic number, because the mean of its divisors is an integer number (151050383064).

Almost surely, 2^{2581842645746} is an apocalyptic number.

2581842645746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2581842645746 is a deficient number, since it is larger than the sum of its proper divisors (2251769612302).

2581842645746 is a wasteful number, since it uses less digits than its factorization.

2581842645746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199802186.

The product of its digits is 103219200, while the sum is 62.

The spelling of 2581842645746 in words is "two trillion, five hundred eighty-one billion, eight hundred forty-two million, six hundred forty-five thousand, seven hundred forty-six".