16506001011 has 16 divisors (see below), whose sum is σ = 22598334720. Its totient is φ = 10712456160.

The previous prime is 16506001009. The next prime is 16506001013. The reversal of 16506001011 is 11010060561.

It is an interprime number because it is at equal distance from previous prime (16506001009) and next prime (16506001013).

It is not a de Polignac number, because 16506001011 - 2¹ = 16506001009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16506001013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434460 + ... + 470921.

It is an arithmetic number, because the mean of its divisors is an integer number (1412395920).

Almost surely, 2^16506001011 is an apocalyptic number.

16506001011 is a deficient number, since it is larger than the sum of its proper divisors (6092333709).

16506001011 is a wasteful number, since it uses less digits than its factorization.

16506001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905546.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 16506001011 its reverse (11010060561), we get a palindrome (27516061572).

The spelling of 16506001011 in words is "sixteen billion, five hundred six million, one thousand, eleven".