20051321775601 has 8 divisors (see below), whose sum is σ = 20724438681344. Its totient is φ = 19379848624560.

The previous prime is 20051321775571. The next prime is 20051321775631. The reversal of 20051321775601 is 10657712315002.

It is an interprime number because it is at equal distance from previous prime (20051321775571) and next prime (20051321775631).

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

It is a cyclic number.

It is not a de Polignac number, because 20051321775601 - 2³¹ = 20049174291953 is a prime.

It is a super-2 number, since 2×20051321775601² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20051321775631) 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, 410913870 + ... + 410962663.

It is an arithmetic number, because the mean of its divisors is an integer number (2590554835168).

Almost surely, 2^{20051321775601} is an apocalyptic number.

It is an amenable number.

20051321775601 is a deficient number, since it is larger than the sum of its proper divisors (673116905743).

20051321775601 is an equidigital number, since it uses as much as digits as its factorization.

20051321775601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821877351.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 20051321775601 in words is "twenty trillion, fifty-one billion, three hundred twenty-one million, seven hundred seventy-five thousand, six hundred one".