20267022155 has 4 divisors (see below), whose sum is σ = 24320426592. Its totient is φ = 16213617720.

The previous prime is 20267022143. The next prime is 20267022197. The reversal of 20267022155 is 55122076202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20267022155 - 2¹⁸ = 20266760011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026702211 + ... + 2026702220.

It is an arithmetic number, because the mean of its divisors is an integer number (6080106648).

Almost surely, 2^20267022155 is an apocalyptic number.

20267022155 is a deficient number, since it is larger than the sum of its proper divisors (4053404437).

20267022155 is an equidigital number, since it uses as much as digits as its factorization.

20267022155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053404436.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 20267022155 its reverse (55122076202), we get a palindrome (75389098357).

The spelling of 20267022155 in words is "twenty billion, two hundred sixty-seven million, twenty-two thousand, one hundred fifty-five".