2541491626809 has 16 divisors (see below), whose sum is σ = 3391789572864. Its totient is φ = 1692761030400.

The previous prime is 2541491626799. The next prime is 2541491626823. The reversal of 2541491626809 is 9086261941452.

It is a happy number.

It is not a de Polignac number, because 2541491626809 - 2¹¹ = 2541491624761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2541491626109) 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 15 ways as a sum of consecutive naturals, for example, 37830769 + ... + 37897889.

It is an arithmetic number, because the mean of its divisors is an integer number (211986848304).

Almost surely, 2^{2541491626809} is an apocalyptic number.

It is an amenable number.

2541491626809 is a deficient number, since it is larger than the sum of its proper divisors (850297946055).

2541491626809 is a wasteful number, since it uses less digits than its factorization.

2541491626809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78608.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 2541491626809 in words is "two trillion, five hundred forty-one billion, four hundred ninety-one million, six hundred twenty-six thousand, eight hundred nine".