16116905951 has 4 divisors (see below), whose sum is σ = 16124304600. Its totient is φ = 16109507304.

The previous prime is 16116905941. The next prime is 16116905957. The reversal of 16116905951 is 15950961161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15950961161 = 17 ⋅938291833.

It is a cyclic number.

It is not a de Polignac number, because 16116905951 - 2³⁰ = 15043164127 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 (16116905957) 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, 3696056 + ... + 3700413.

It is an arithmetic number, because the mean of its divisors is an integer number (4031076150).

Almost surely, 2^16116905951 is an apocalyptic number.

16116905951 is a deficient number, since it is larger than the sum of its proper divisors (7398649).

16116905951 is an equidigital number, since it uses as much as digits as its factorization.

16116905951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398648.

The product of its (nonzero) digits is 72900, while the sum is 44.

The spelling of 16116905951 in words is "sixteen billion, one hundred sixteen million, nine hundred five thousand, nine hundred fifty-one".