16506053231 has 2 divisors, whose sum is σ = 16506053232. Its totient is φ = 16506053230.

The previous prime is 16506053227. The next prime is 16506053309. The reversal of 16506053231 is 13235060561.

It is a weak prime.

It is an emirp because it is prime and its reverse (13235060561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16506053231 - 2² = 16506053227 is a prime.

It is a super-2 number, since 2×16506053231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16505053231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253026615 + 8253026616.

It is an arithmetic number, because the mean of its divisors is an integer number (8253026616).

Almost surely, 2^16506053231 is an apocalyptic number.

16506053231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506053231 is an equidigital number, since it uses as much as digits as its factorization.

16506053231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 16506053231 in words is "sixteen billion, five hundred six million, fifty-three thousand, two hundred thirty-one".