18712671522771 has 8 divisors (see below), whose sum is σ = 25481084626944. Its totient is φ = 12209686383560.

The previous prime is 18712671522709. The next prime is 18712671522799. The reversal of 18712671522771 is 17722517621781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18712671522771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18712671522071) 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, 66356991075 + ... + 66356991356.

It is an arithmetic number, because the mean of its divisors is an integer number (3185135578368).

Almost surely, 2^{18712671522771} is an apocalyptic number.

18712671522771 is a deficient number, since it is larger than the sum of its proper divisors (6768413104173).

18712671522771 is a wasteful number, since it uses less digits than its factorization.

18712671522771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132713982481.

The product of its digits is 4609920, while the sum is 57.

The spelling of 18712671522771 in words is "eighteen trillion, seven hundred twelve billion, six hundred seventy-one million, five hundred twenty-two thousand, seven hundred seventy-one".