16427372765 has 8 divisors (see below), whose sum is σ = 20872426680. Its totient is φ = 12368845312.

The previous prime is 16427372749. The next prime is 16427372783. The reversal of 16427372765 is 56727372461.

It can be written as a sum of positive squares in 4 ways, for example, as 6785311129 + 9642061636 = 82373^2 + 98194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16427372765 - 2⁴ = 16427372749 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 96631520 + ... + 96631689.

It is an arithmetic number, because the mean of its divisors is an integer number (2609053335).

Almost surely, 2^16427372765 is an apocalyptic number.

It is an amenable number.

16427372765 is a deficient number, since it is larger than the sum of its proper divisors (4445053915).

16427372765 is a wasteful number, since it uses less digits than its factorization.

16427372765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193263231.

The product of its digits is 2963520, while the sum is 50.

The spelling of 16427372765 in words is "sixteen billion, four hundred twenty-seven million, three hundred seventy-two thousand, seven hundred sixty-five".