2540521221554 has 16 divisors (see below), whose sum is σ = 3820846444800. Its totient is φ = 1266907837824.

The previous prime is 2540521221551. The next prime is 2540521221577. The reversal of 2540521221554 is 4551221250452.

It is not an unprimeable number, because it can be changed into a prime (2540521221551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1906562 + ... + 2952290.

It is an arithmetic number, because the mean of its divisors is an integer number (238802902800).

Almost surely, 2^{2540521221554} is an apocalyptic number.

2540521221554 is a deficient number, since it is larger than the sum of its proper divisors (1280325223246).

2540521221554 is a wasteful number, since it uses less digits than its factorization.

2540521221554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048937.

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 2540521221554 in words is "two trillion, five hundred forty billion, five hundred twenty-one million, two hundred twenty-one thousand, five hundred fifty-four".