12611990871703 has 4 divisors (see below), whose sum is σ = 12612483957640. Its totient is φ = 12611497785768.

The previous prime is 12611990871659. The next prime is 12611990871713. The reversal of 12611990871703 is 30717809911621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12611990871703 is a prime.

It is a super-2 number, since 2×12611990871703² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611990871713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246504600 + ... + 246555757.

It is an arithmetic number, because the mean of its divisors is an integer number (3153120989410).

Almost surely, 2^{12611990871703} is an apocalyptic number.

12611990871703 is a deficient number, since it is larger than the sum of its proper divisors (493085937).

12611990871703 is an equidigital number, since it uses as much as digits as its factorization.

12611990871703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493085936.

The product of its (nonzero) digits is 1143072, while the sum is 55.

The spelling of 12611990871703 in words is "twelve trillion, six hundred eleven billion, nine hundred ninety million, eight hundred seventy-one thousand, seven hundred three".