16407865797 has 4 divisors (see below), whose sum is σ = 21877154400. Its totient is φ = 10938577196.

The previous prime is 16407865753. The next prime is 16407865829. The reversal of 16407865797 is 79756870461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79756870461 = 3 ⋅26585623487.

It is a cyclic number.

It is not a de Polignac number, because 16407865797 - 2²⁸ = 16139430341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16407865797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16407865897) 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 3 ways as a sum of consecutive naturals, for example, 2734644297 + ... + 2734644302.

It is an arithmetic number, because the mean of its divisors is an integer number (5469288600).

Almost surely, 2^16407865797 is an apocalyptic number.

It is an amenable number.

16407865797 is a deficient number, since it is larger than the sum of its proper divisors (5469288603).

16407865797 is an equidigital number, since it uses as much as digits as its factorization.

16407865797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469288602.

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 16407865797 in words is "sixteen billion, four hundred seven million, eight hundred sixty-five thousand, seven hundred ninety-seven".