2540886735709 has 6 divisors (see below), whose sum is σ = 2955725386494. Its totient is φ = 2177902916280.

The previous prime is 2540886735703. The next prime is 2540886735767. The reversal of 2540886735709 is 9075376880452.

It can be written as a sum of positive squares in only one way, i.e., 2353416787225 + 187469948484 = 1534085^2 + 432978^2 .

It is not a de Polignac number, because 2540886735709 - 2³ = 2540886735701 is a prime.

It is a super-2 number, since 2×2540886735709² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540886735701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25927415622 + ... + 25927415719.

It is an arithmetic number, because the mean of its divisors is an integer number (492620897749).

Almost surely, 2^{2540886735709} is an apocalyptic number.

It is an amenable number.

2540886735709 is a deficient number, since it is larger than the sum of its proper divisors (414838650785).

2540886735709 is an equidigital number, since it uses as much as digits as its factorization.

2540886735709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51854831355 (or 51854831348 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 2540886735709 in words is "two trillion, five hundred forty billion, eight hundred eighty-six million, seven hundred thirty-five thousand, seven hundred nine".