2542936648721 has 16 divisors (see below), whose sum is σ = 2993312044800. Its totient is φ = 2114673531840.

The previous prime is 2542936648717. The next prime is 2542936648783. The reversal of 2542936648721 is 1278466392452.

It is a cyclic number.

It is not a de Polignac number, because 2542936648721 - 2² = 2542936648717 is a prime.

It is a Smith number, since the sum of its digits (59) 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 not an unprimeable number, because it can be changed into a prime (2542936645721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13975925 + ... + 14156706.

It is an arithmetic number, because the mean of its divisors is an integer number (187082002800).

Almost surely, 2^{2542936648721} is an apocalyptic number.

It is an amenable number.

2542936648721 is a deficient number, since it is larger than the sum of its proper divisors (450375396079).

2542936648721 is a wasteful number, since it uses less digits than its factorization.

2542936648721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28133024.

The product of its digits is 34836480, while the sum is 59.

The spelling of 2542936648721 in words is "two trillion, five hundred forty-two billion, nine hundred thirty-six million, six hundred forty-eight thousand, seven hundred twenty-one".