2540678650129 has 4 divisors (see below), whose sum is σ = 2599764200176. Its totient is φ = 2481593100084.

The previous prime is 2540678650127. The next prime is 2540678650157. The reversal of 2540678650129 is 9210568760452.

2540678650129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2540678650129 - 2¹ = 2540678650127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2540678650129.

It is not an unprimeable number, because it can be changed into a prime (2540678650121) 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, 29542774959 + ... + 29542775044.

It is an arithmetic number, because the mean of its divisors is an integer number (649941050044).

Almost surely, 2^{2540678650129} is an apocalyptic number.

It is an amenable number.

2540678650129 is a deficient number, since it is larger than the sum of its proper divisors (59085550047).

2540678650129 is an equidigital number, since it uses as much as digits as its factorization.

2540678650129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59085550046.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 2540678650129 in words is "two trillion, five hundred forty billion, six hundred seventy-eight million, six hundred fifty thousand, one hundred twenty-nine".