16117051566 has 32 divisors (see below), whose sum is σ = 40187973888. Its totient is φ = 4186247040.

The previous prime is 16117051553. The next prime is 16117051567. The reversal of 16117051566 is 66515071161.

It is a super-2 number, since 2×16117051566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16117051567) 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, 17442235 + ... + 17443158.

It is an arithmetic number, because the mean of its divisors is an integer number (1255874184).

Almost surely, 2^16117051566 is an apocalyptic number.

16117051566 is an abundant number, since it is smaller than the sum of its proper divisors (24070922322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16117051566 is a wasteful number, since it uses less digits than its factorization.

16117051566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34885416.

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 16117051566 in words is "sixteen billion, one hundred seventeen million, fifty-one thousand, five hundred sixty-six".