16539246026 has 4 divisors (see below), whose sum is σ = 24808869042. Its totient is φ = 8269623012.

The previous prime is 16539246007. The next prime is 16539246037. The reversal of 16539246026 is 62064293561.

It is a Cunningham number, because it is equal to 128605²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 16539246025 + 1 = 128605^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4134811505 + ... + 4134811508.

Almost surely, 2^16539246026 is an apocalyptic number.

16539246026 is a deficient number, since it is larger than the sum of its proper divisors (8269623016).

16539246026 is an equidigital number, since it uses as much as digits as its factorization.

16539246026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269623015.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 16539246026 in words is "sixteen billion, five hundred thirty-nine million, two hundred forty-six thousand, twenty-six".