16256886971 has 4 divisors (see below), whose sum is σ = 17507416752. Its totient is φ = 15006357192.

The previous prime is 16256886959. The next prime is 16256886983. The reversal of 16256886971 is 17968865261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17968865261 = 7351 ⋅2444411.

It is an interprime number because it is at equal distance from previous prime (16256886959) and next prime (16256886983).

It is a cyclic number.

It is not a de Polignac number, because 16256886971 - 2²⁶ = 16189778107 is a prime.

It is a super-5 number, since 5×16256886971⁵ (a number of 52 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16256886971.

It is not an unprimeable number, because it can be changed into a prime (16256886991) 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, 625264871 + ... + 625264896.

It is an arithmetic number, because the mean of its divisors is an integer number (4376854188).

Almost surely, 2^16256886971 is an apocalyptic number.

16256886971 is a deficient number, since it is larger than the sum of its proper divisors (1250529781).

16256886971 is a wasteful number, since it uses less digits than its factorization.

16256886971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250529780.

The product of its digits is 8709120, while the sum is 59.

The spelling of 16256886971 in words is "sixteen billion, two hundred fifty-six million, eight hundred eighty-six thousand, nine hundred seventy-one".