2540120543653 has 64 divisors (see below), whose sum is σ = 3392983696896. Its totient is φ = 1840849920000.

The previous prime is 2540120543633. The next prime is 2540120543671. The reversal of 2540120543653 is 3563450210452.

It is not a de Polignac number, because 2540120543653 - 2¹³ = 2540120535461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540120543633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68862451 + ... + 68899327.

It is an arithmetic number, because the mean of its divisors is an integer number (53015370264).

Almost surely, 2^{2540120543653} is an apocalyptic number.

It is an amenable number.

2540120543653 is a deficient number, since it is larger than the sum of its proper divisors (852863153243).

2540120543653 is a wasteful number, since it uses less digits than its factorization.

2540120543653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37534.

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 2540120543653 in words is "two trillion, five hundred forty billion, one hundred twenty million, five hundred forty-three thousand, six hundred fifty-three".