20057223515 has 16 divisors (see below), whose sum is σ = 27917605632. Its totient is φ = 13548246624.

The previous prime is 20057223499. The next prime is 20057223553. The reversal of 20057223515 is 51532275002.

It is a cyclic number.

It is not a de Polignac number, because 20057223515 - 2⁴ = 20057223499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4274249 + ... + 4278938.

It is an arithmetic number, because the mean of its divisors is an integer number (1744850352).

Almost surely, 2^20057223515 is an apocalyptic number.

20057223515 is a deficient number, since it is larger than the sum of its proper divisors (7860382117).

20057223515 is an equidigital number, since it uses as much as digits as its factorization.

20057223515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8553266.

The product of its (nonzero) digits is 21000, while the sum is 32.

Adding to 20057223515 its reverse (51532275002), we get a palindrome (71589498517).

The spelling of 20057223515 in words is "twenty billion, fifty-seven million, two hundred twenty-three thousand, five hundred fifteen".