20545122267 has 12 divisors (see below), whose sum is σ = 30307698720. Its totient is φ = 13405327728.

The previous prime is 20545122253. The next prime is 20545122287. The reversal of 20545122267 is 76222154502.

20545122267 is a `hidden beast` number, since 20 + 545 + 12 + 22 + 67 = 666.

It is not a de Polignac number, because 20545122267 - 2⁸ = 20545122011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20545122287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24284592 + ... + 24285437.

It is an arithmetic number, because the mean of its divisors is an integer number (2525641560).

Almost surely, 2^20545122267 is an apocalyptic number.

20545122267 is a deficient number, since it is larger than the sum of its proper divisors (9762576453).

20545122267 is a wasteful number, since it uses less digits than its factorization.

20545122267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48570082 (or 48570079 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

Adding to 20545122267 its reverse (76222154502), we get a palindrome (96767276769).

The spelling of 20545122267 in words is "twenty billion, five hundred forty-five million, one hundred twenty-two thousand, two hundred sixty-seven".