20501227026 has 24 divisors (see below), whose sum is σ = 50764943424. Its totient is φ = 5857493400.

The previous prime is 20501227001. The next prime is 20501227051. The reversal of 20501227026 is 62072210502.

It is an interprime number because it is at equal distance from previous prime (20501227001) and next prime (20501227051).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 81353950 + ... + 81354201.

It is an arithmetic number, because the mean of its divisors is an integer number (2115205976).

Almost surely, 2^20501227026 is an apocalyptic number.

20501227026 is an abundant number, since it is smaller than the sum of its proper divisors (30263716398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20501227026 is a wasteful number, since it uses less digits than its factorization.

20501227026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162708166 (or 162708163 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 20501227026 its reverse (62072210502), we get a palindrome (82573437528).

The spelling of 20501227026 in words is "twenty billion, five hundred one million, two hundred twenty-seven thousand, twenty-six".