20260460426021 has 4 divisors (see below), whose sum is σ = 20263770424044. Its totient is φ = 20257150428000.

The previous prime is 20260460425949. The next prime is 20260460426027. The reversal of 20260460426021 is 12062406406202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2442690793921 + 17817769632100 = 1562911^2 + 4221110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20260460426021 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 (20260460426027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654989830 + ... + 1655002071.

It is an arithmetic number, because the mean of its divisors is an integer number (5065942606011).

Almost surely, 2^{20260460426021} is an apocalyptic number.

It is an amenable number.

20260460426021 is a deficient number, since it is larger than the sum of its proper divisors (3309998023).

20260460426021 is an equidigital number, since it uses as much as digits as its factorization.

20260460426021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309998022.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 20260460426021 in words is "twenty trillion, two hundred sixty billion, four hundred sixty million, four hundred twenty-six thousand, twenty-one".