12541836909435 has 32 divisors (see below), whose sum is σ = 20097829140480. Its totient is φ = 6678690715008.

The previous prime is 12541836909431. The next prime is 12541836909463. The reversal of 12541836909435 is 53490963814521.

It is a happy number.

It is not a de Polignac number, because 12541836909435 - 2² = 12541836909431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12541836909431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25880974 + ... + 26361116.

It is an arithmetic number, because the mean of its divisors is an integer number (628057160640).

Almost surely, 2^{12541836909435} is an apocalyptic number.

12541836909435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12541836909435 is a deficient number, since it is larger than the sum of its proper divisors (7555992231045).

12541836909435 is a wasteful number, since it uses less digits than its factorization.

12541836909435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482827.

The product of its (nonzero) digits is 27993600, while the sum is 60.

It can be divided in two parts, 1254183 and 6909435, that added together give a palindrome (8163618).

The spelling of 12541836909435 in words is "twelve trillion, five hundred forty-one billion, eight hundred thirty-six million, nine hundred nine thousand, four hundred thirty-five".