13908616571 has 4 divisors (see below), whose sum is σ = 13909310352. Its totient is φ = 13907922792.

The previous prime is 13908616567. The next prime is 13908616573. The reversal of 13908616571 is 17561680931.

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

It is a cyclic number.

It is not a de Polignac number, because 13908616571 - 2² = 13908616567 is a prime.

It is a super-2 number, since 2×13908616571² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13908616573) 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, 315896 + ... + 357221.

It is an arithmetic number, because the mean of its divisors is an integer number (3477327588).

Almost surely, 2^13908616571 is an apocalyptic number.

13908616571 is a deficient number, since it is larger than the sum of its proper divisors (693781).

13908616571 is an equidigital number, since it uses as much as digits as its factorization.

13908616571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693780.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 13908616571 in words is "thirteen billion, nine hundred eight million, six hundred sixteen thousand, five hundred seventy-one".