16290519681 has 16 divisors (see below), whose sum is σ = 21957566400. Its totient is φ = 10742251968.

The previous prime is 16290519673. The next prime is 16290519691. The reversal of 16290519681 is 18691509261.

It is not a de Polignac number, because 16290519681 - 2³ = 16290519673 is a prime.

It is a super-2 number, since 2×16290519681² (a number of 21 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 16290519681.

It is not an unprimeable number, because it can be changed into a prime (16290519601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149515 + ... + 234383.

It is an arithmetic number, because the mean of its divisors is an integer number (1372347900).

Almost surely, 2^16290519681 is an apocalyptic number.

It is an amenable number.

16290519681 is a deficient number, since it is larger than the sum of its proper divisors (5667046719).

16290519681 is a wasteful number, since it uses less digits than its factorization.

16290519681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85568.

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 16290519681 in words is "sixteen billion, two hundred ninety million, five hundred nineteen thousand, six hundred eighty-one".