20226251032661 has 8 divisors (see below), whose sum is σ = 20907429763584. Its totient is φ = 19546867240560.

The previous prime is 20226251032639. The next prime is 20226251032783. The reversal of 20226251032661 is 16623015262202.

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 20226251032661 - 2³⁰ = 20225177290837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226251032601) 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, 448711790 + ... + 448756863.

It is an arithmetic number, because the mean of its divisors is an integer number (2613428720448).

Almost surely, 2^{20226251032661} is an apocalyptic number.

It is an amenable number.

20226251032661 is a deficient number, since it is larger than the sum of its proper divisors (681178730923).

20226251032661 is an equidigital number, since it uses as much as digits as its factorization.

20226251032661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897469411.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 20226251032661 its reverse (16623015262202), we get a palindrome (36849266294863).

The spelling of 20226251032661 in words is "twenty trillion, two hundred twenty-six billion, two hundred fifty-one million, thirty-two thousand, six hundred sixty-one".