12540085764771 has 8 divisors (see below), whose sum is σ = 16720524092160. Its totient is φ = 8359852306952.

The previous prime is 12540085764683. The next prime is 12540085764793. The reversal of 12540085764771 is 17746758004521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12540085764771 - 2⁹ = 12540085764259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12540085764571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51074511 + ... + 51319448.

It is an arithmetic number, because the mean of its divisors is an integer number (2090065511520).

Almost surely, 2^{12540085764771} is an apocalyptic number.

12540085764771 is a deficient number, since it is larger than the sum of its proper divisors (4180438327389).

12540085764771 is a wasteful number, since it uses less digits than its factorization.

12540085764771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102434785.

The product of its (nonzero) digits is 13171200, while the sum is 57.

It can be divided in two parts, 125400 and 85764771, that added together give a triangular number (85890171 = T₁₃₁₀₆).

The spelling of 12540085764771 in words is "twelve trillion, five hundred forty billion, eighty-five million, seven hundred sixty-four thousand, seven hundred seventy-one".