20405652026 has 8 divisors (see below), whose sum is σ = 31939281504. Its totient is φ = 9759224860.

The previous prime is 20405651969. The next prime is 20405652061. The reversal of 20405652026 is 62025650402.

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

It is a junction number, because it is equal to n+sod(n) for n = 20405651983 and 20405652001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221800520 + ... + 221800611.

It is an arithmetic number, because the mean of its divisors is an integer number (3992410188).

Almost surely, 2^20405652026 is an apocalyptic number.

20405652026 is a deficient number, since it is larger than the sum of its proper divisors (11533629478).

20405652026 is a wasteful number, since it uses less digits than its factorization.

20405652026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443601156.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20405652026 in words is "twenty billion, four hundred five million, six hundred fifty-two thousand, twenty-six".