20165256150657 has 8 divisors (see below), whose sum is σ = 26919054697920. Its totient is φ = 13427480851920.

The previous prime is 20165256150647. The next prime is 20165256150659. The reversal of 20165256150657 is 75605165256102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20165256150657 - 2⁸ = 20165256150401 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20165256150659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4005809194 + ... + 4005814227.

It is an arithmetic number, because the mean of its divisors is an integer number (3364881837240).

Almost surely, 2^{20165256150657} is an apocalyptic number.

It is an amenable number.

20165256150657 is a deficient number, since it is larger than the sum of its proper divisors (6753798547263).

20165256150657 is an equidigital number, since it uses as much as digits as its factorization.

20165256150657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011624263.

The product of its (nonzero) digits is 3780000, while the sum is 51.

The spelling of 20165256150657 in words is "twenty trillion, one hundred sixty-five billion, two hundred fifty-six million, one hundred fifty thousand, six hundred fifty-seven".