20426303026621 has 8 divisors (see below), whose sum is σ = 20431106872704. Its totient is φ = 20421499740960.

The previous prime is 20426303026601. The next prime is 20426303026627. The reversal of 20426303026621 is 12662030362402.

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 20426303026621 - 2⁹ = 20426303026109 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 (20426303026627) 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, 77776290 + ... + 78038476.

It is an arithmetic number, because the mean of its divisors is an integer number (2553888359088).

Almost surely, 2^{20426303026621} is an apocalyptic number.

It is an amenable number.

20426303026621 is a deficient number, since it is larger than the sum of its proper divisors (4803846083).

20426303026621 is a wasteful number, since it uses less digits than its factorization.

20426303026621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280211.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 20426303026621 in words is "twenty trillion, four hundred twenty-six billion, three hundred three million, twenty-six thousand, six hundred twenty-one".