20218075619 has 8 divisors (see below), whose sum is σ = 23134251360. Its totient is φ = 17308869696.

The previous prime is 20218075601. The next prime is 20218075627. The reversal of 20218075619 is 91657081202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20218075619 is a prime.

It is a super-2 number, since 2×20218075619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20218075679) 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 7 ways as a sum of consecutive naturals, for example, 1736234 + ... + 1747839.

It is an arithmetic number, because the mean of its divisors is an integer number (2891781420).

Almost surely, 2^20218075619 is an apocalyptic number.

20218075619 is a deficient number, since it is larger than the sum of its proper divisors (2916175741).

20218075619 is an equidigital number, since it uses as much as digits as its factorization.

20218075619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484909.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 20218075619 in words is "twenty billion, two hundred eighteen million, seventy-five thousand, six hundred nineteen".