16011156566 has 32 divisors (see below), whose sum is σ = 25332922368. Its totient is φ = 7574577120.

The previous prime is 16011156547. The next prime is 16011156587. The reversal of 16011156566 is 66565111061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6541955 + ... + 6544401.

It is an arithmetic number, because the mean of its divisors is an integer number (791653824).

Almost surely, 2^16011156566 is an apocalyptic number.

16011156566 is a deficient number, since it is larger than the sum of its proper divisors (9321765802).

16011156566 is a wasteful number, since it uses less digits than its factorization.

16011156566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 16011156566 in words is "sixteen billion, eleven million, one hundred fifty-six thousand, five hundred sixty-six".