16261021113 has 4 divisors (see below), whose sum is σ = 21681361488. Its totient is φ = 10840680740.

The previous prime is 16261021103. The next prime is 16261021141. The reversal of 16261021113 is 31112016261.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16261021113 - 2⁴ = 16261021097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16261021103) 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, 2710170183 + ... + 2710170188.

It is an arithmetic number, because the mean of its divisors is an integer number (5420340372).

Almost surely, 2^16261021113 is an apocalyptic number.

It is an amenable number.

16261021113 is a deficient number, since it is larger than the sum of its proper divisors (5420340375).

16261021113 is an equidigital number, since it uses as much as digits as its factorization.

16261021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420340374.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 16261021113 its reverse (31112016261), we get a palindrome (47373037374).

The spelling of 16261021113 in words is "sixteen billion, two hundred sixty-one million, twenty-one thousand, one hundred thirteen".