16115501161111 has 4 divisors (see below), whose sum is σ = 17580546721224. Its totient is φ = 14650455601000.

The previous prime is 16115501161087. The next prime is 16115501161189. The reversal of 16115501161111 is 11116110551161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16115501161111 - 2¹¹ = 16115501159063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16115501131111) 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, 732522780040 + ... + 732522780061.

It is an arithmetic number, because the mean of its divisors is an integer number (4395136680306).

Almost surely, 2^{16115501161111} is an apocalyptic number.

16115501161111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16115501161111 is a deficient number, since it is larger than the sum of its proper divisors (1465045560113).

16115501161111 is a wasteful number, since it uses less digits than its factorization.

16115501161111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465045560112.

The product of its (nonzero) digits is 900, while the sum is 31.

The spelling of 16115501161111 in words is "sixteen trillion, one hundred fifteen billion, five hundred one million, one hundred sixty-one thousand, one hundred eleven".