16011711077 has 4 divisors (see below), whose sum is σ = 16031167200. Its totient is φ = 15992254956.

The previous prime is 16011710993. The next prime is 16011711083. The reversal of 16011711077 is 77011711061.

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, and also an emirpimes, since its reverse is a distinct semiprime: 77011711061 = 1031 ⋅74696131.

It is a cyclic number.

It is not a de Polignac number, because 16011711077 - 2⁸ = 16011710821 is a prime.

It is a super-2 number, since 2×16011711077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16011711377) 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, 9726827 + ... + 9728472.

It is an arithmetic number, because the mean of its divisors is an integer number (4007791800).

Almost surely, 2^16011711077 is an apocalyptic number.

It is an amenable number.

16011711077 is a deficient number, since it is larger than the sum of its proper divisors (19456123).

16011711077 is an equidigital number, since it uses as much as digits as its factorization.

16011711077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19456122.

The product of its (nonzero) digits is 2058, while the sum is 32.

The spelling of 16011711077 in words is "sixteen billion, eleven million, seven hundred eleven thousand, seventy-seven".