20167905860641 has 16 divisors (see below), whose sum is σ = 25272038689920. Its totient is φ = 15635478458880.

The previous prime is 20167905860621. The next prime is 20167905860651. The reversal of 20167905860641 is 14606850976102.

It is not a de Polignac number, because 20167905860641 - 2⁷ = 20167905860513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20167905860621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664758576 + ... + 664788913.

It is an arithmetic number, because the mean of its divisors is an integer number (1579502418120).

Almost surely, 2^{20167905860641} is an apocalyptic number.

It is an amenable number.

20167905860641 is a deficient number, since it is larger than the sum of its proper divisors (5104132829279).

20167905860641 is a wasteful number, since it uses less digits than its factorization.

20167905860641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329547704.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 20167905860641 in words is "twenty trillion, one hundred sixty-seven billion, nine hundred five million, eight hundred sixty thousand, six hundred forty-one".