20252021405771 has 8 divisors (see below), whose sum is σ = 20262851665920. Its totient is φ = 20241194039208.

The previous prime is 20252021405747. The next prime is 20252021405813. The reversal of 20252021405771 is 17750412025202.

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 20252021405771 - 2²² = 20252017211467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20252021405711) 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, 13351310 + ... + 14790588.

It is an arithmetic number, because the mean of its divisors is an integer number (2532856458240).

Almost surely, 2^{20252021405771} is an apocalyptic number.

20252021405771 is a deficient number, since it is larger than the sum of its proper divisors (10830260149).

20252021405771 is a wasteful number, since it uses less digits than its factorization.

20252021405771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446793.

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 20252021405771 in words is "twenty trillion, two hundred fifty-two billion, twenty-one million, four hundred five thousand, seven hundred seventy-one".