16245521111 has 4 divisors (see below), whose sum is σ = 16253658072. Its totient is φ = 16237384152.

The previous prime is 16245521093. The next prime is 16245521119. The reversal of 16245521111 is 11112554261.

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-16245521111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16245521119) 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, 4065485 + ... + 4069478.

It is an arithmetic number, because the mean of its divisors is an integer number (4063414518).

Almost surely, 2^16245521111 is an apocalyptic number.

16245521111 is a deficient number, since it is larger than the sum of its proper divisors (8136961).

16245521111 is an equidigital number, since it uses as much as digits as its factorization.

16245521111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8136960.

The product of its digits is 2400, while the sum is 29.

The spelling of 16245521111 in words is "sixteen billion, two hundred forty-five million, five hundred twenty-one thousand, one hundred eleven".