16421115711 has 64 divisors (see below), whose sum is σ = 31126588416. Its totient is φ = 7411046400.

The previous prime is 16421115707. The next prime is 16421115713. The reversal of 16421115711 is 11751112461.

It is not a de Polignac number, because 16421115711 - 2² = 16421115707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421115713) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109780 + ... + 211881.

It is an arithmetic number, because the mean of its divisors is an integer number (486352944).

Almost surely, 2^16421115711 is an apocalyptic number.

16421115711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16421115711 is a deficient number, since it is larger than the sum of its proper divisors (14705472705).

16421115711 is a wasteful number, since it uses less digits than its factorization.

16421115711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321712.

The product of its digits is 1680, while the sum is 30.

The spelling of 16421115711 in words is "sixteen billion, four hundred twenty-one million, one hundred fifteen thousand, seven hundred eleven".