16591406217914 has 64 divisors (see below), whose sum is σ = 30830523212160. Its totient is φ = 6597477918720.

The previous prime is 16591406217913. The next prime is 16591406217917. The reversal of 16591406217914 is 41971260419561.

It is a super-2 number, since 2×16591406217914² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16591406217914.

It is not an unprimeable number, because it can be changed into a prime (16591406217913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21650219 + ... + 22403454.

It is an arithmetic number, because the mean of its divisors is an integer number (481726925190).

Almost surely, 2^{16591406217914} is an apocalyptic number.

16591406217914 is a deficient number, since it is larger than the sum of its proper divisors (14239116994246).

16591406217914 is a wasteful number, since it uses less digits than its factorization.

16591406217914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44053775.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 16591406217914 in words is "sixteen trillion, five hundred ninety-one billion, four hundred six million, two hundred seventeen thousand, nine hundred fourteen".