2540166530003 has 4 divisors (see below), whose sum is σ = 2550706640328. Its totient is φ = 2529626419680.

The previous prime is 2540166529991. The next prime is 2540166530009. The reversal of 2540166530003 is 3000356610452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2540166530003 - 2⁴ = 2540166529987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540166530009) 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, 5270054801 + ... + 5270055282.

It is an arithmetic number, because the mean of its divisors is an integer number (637676660082).

Almost surely, 2^{2540166530003} is an apocalyptic number.

2540166530003 is a deficient number, since it is larger than the sum of its proper divisors (10540110325).

2540166530003 is a wasteful number, since it uses less digits than its factorization.

2540166530003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10540110324.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 2540166530003 in words is "two trillion, five hundred forty billion, one hundred sixty-six million, five hundred thirty thousand, three".