12805382802541 has 12 divisors (see below), whose sum is σ = 14962856022912. Its totient is φ = 10926822471768.

The previous prime is 12805382802539. The next prime is 12805382802547. The reversal of 12805382802541 is 14520828350821.

It is not a de Polignac number, because 12805382802541 - 2¹ = 12805382802539 is a prime.

It is a super-2 number, since 2×12805382802541² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805382802547) 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 11 ways as a sum of consecutive naturals, for example, 585940515 + ... + 585962368.

It is an arithmetic number, because the mean of its divisors is an integer number (1246904668576).

Almost surely, 2^{12805382802541} is an apocalyptic number.

It is an amenable number.

12805382802541 is a deficient number, since it is larger than the sum of its proper divisors (2157473220371).

12805382802541 is a wasteful number, since it uses less digits than its factorization.

12805382802541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171903120 (or 1171903113 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 12805382802541 in words is "twelve trillion, eight hundred five billion, three hundred eighty-two million, eight hundred two thousand, five hundred forty-one".