16427295881 has 4 divisors (see below), whose sum is σ = 16445816832. Its totient is φ = 16408774932.

The previous prime is 16427295811. The next prime is 16427295893. The reversal of 16427295881 is 18859272461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18859272461 = 61 ⋅309168401.

It is a cyclic number.

It is not a de Polignac number, because 16427295881 - 2¹⁰ = 16427294857 is a prime.

It is a super-2 number, since 2×16427295881² (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 (16427295811) 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, 9259145 + ... + 9260918.

It is an arithmetic number, because the mean of its divisors is an integer number (4111454208).

Almost surely, 2^16427295881 is an apocalyptic number.

It is an amenable number.

16427295881 is a deficient number, since it is larger than the sum of its proper divisors (18520951).

16427295881 is an equidigital number, since it uses as much as digits as its factorization.

16427295881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18520950.

The product of its digits is 1935360, while the sum is 53.

The spelling of 16427295881 in words is "sixteen billion, four hundred twenty-seven million, two hundred ninety-five thousand, eight hundred eighty-one".