20440667519 has 8 divisors (see below), whose sum is σ = 21834593280. Its totient is φ = 19068023296.

The previous prime is 20440667497. The next prime is 20440667521. The reversal of 20440667519 is 91576604402.

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

It is a cyclic number.

It is not a de Polignac number, because 20440667519 - 2²⁸ = 20172232063 is a prime.

It is a super-2 number, since 2×20440667519² (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 20440667519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440660519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5318399 + ... + 5322240.

It is an arithmetic number, because the mean of its divisors is an integer number (2729324160).

Almost surely, 2^20440667519 is an apocalyptic number.

20440667519 is a deficient number, since it is larger than the sum of its proper divisors (1393925761).

20440667519 is a wasteful number, since it uses less digits than its factorization.

20440667519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640769.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 20440667519 in words is "twenty billion, four hundred forty million, six hundred sixty-seven thousand, five hundred nineteen".