20221679519 has 16 divisors (see below), whose sum is σ = 20880115200. Its totient is φ = 19574164896.

The previous prime is 20221679509. The next prime is 20221679561. The reversal of 20221679519 is 91597612202.

It is not a de Polignac number, because 20221679519 - 2¹⁶ = 20221613983 is a prime.

It is a super-2 number, since 2×20221679519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20221679519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221679509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3688022 + ... + 3693500.

It is an arithmetic number, because the mean of its divisors is an integer number (1305007200).

Almost surely, 2^20221679519 is an apocalyptic number.

20221679519 is a deficient number, since it is larger than the sum of its proper divisors (658435681).

20221679519 is an equidigital number, since it uses as much as digits as its factorization.

20221679519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 20221679519 in words is "twenty billion, two hundred twenty-one million, six hundred seventy-nine thousand, five hundred nineteen".