2540323754536 has 8 divisors (see below), whose sum is σ = 4763107039770. Its totient is φ = 1270161877264.

The previous prime is 2540323754467. The next prime is 2540323754593. The reversal of 2540323754536 is 6354573230452.

It can be written as a sum of positive squares in only one way, i.e., 1826795528100 + 713528226436 = 1351590^2 + 844706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2540323754536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158770234651 + ... + 158770234666.

Almost surely, 2^{2540323754536} is an apocalyptic number.

It is an amenable number.

2540323754536 is a deficient number, since it is larger than the sum of its proper divisors (2222783285234).

2540323754536 is a wasteful number, since it uses less digits than its factorization.

2540323754536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317540469323 (or 317540469319 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 49.

Adding to 2540323754536 its reverse (6354573230452), we get a palindrome (8894896984988).

The spelling of 2540323754536 in words is "two trillion, five hundred forty billion, three hundred twenty-three million, seven hundred fifty-four thousand, five hundred thirty-six".