20257164167444 has 12 divisors (see below), whose sum is σ = 35450073904224. Its totient is φ = 10128571623384.

The previous prime is 20257164167441. The next prime is 20257164167447. The reversal of 20257164167444 is 44476146175202.

It is an interprime number because it is at equal distance from previous prime (20257164167441) and next prime (20257164167447).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20257164167441) 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 3 ways as a sum of consecutive naturals, for example, 3158537 + ... + 7105679.

It is an arithmetic number, because the mean of its divisors is an integer number (2954172825352).

Almost surely, 2^{20257164167444} is an apocalyptic number.

It is an amenable number.

20257164167444 is a deficient number, since it is larger than the sum of its proper divisors (15192909736780).

20257164167444 is a wasteful number, since it uses less digits than its factorization.

20257164167444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230174 (or 5230172 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 20257164167444 in words is "twenty trillion, two hundred fifty-seven billion, one hundred sixty-four million, one hundred sixty-seven thousand, four hundred forty-four".