20450350652621 has 8 divisors (see below), whose sum is σ = 20598016404000. Its totient is φ = 20302692629040.

The previous prime is 20450350652609. The next prime is 20450350652659. The reversal of 20450350652621 is 12625605305402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20450350652621 is a prime.

It is a super-2 number, since 2×20450350652621² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450350652671) 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, 3433430 + ... + 7258728.

It is an arithmetic number, because the mean of its divisors is an integer number (2574752050500).

Almost surely, 2^{20450350652621} is an apocalyptic number.

It is an amenable number.

20450350652621 is a deficient number, since it is larger than the sum of its proper divisors (147665751379).

20450350652621 is a wasteful number, since it uses less digits than its factorization.

20450350652621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863899.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 20450350652621 in words is "twenty trillion, four hundred fifty billion, three hundred fifty million, six hundred fifty-two thousand, six hundred twenty-one".