20869252421305 has 16 divisors (see below), whose sum is σ = 25257981450240. Its totient is φ = 16552333832832.

The previous prime is 20869252421293. The next prime is 20869252421357. The reversal of 20869252421305 is 50312425296802.

It is a cyclic number.

It is not a de Polignac number, because 20869252421305 - 2¹⁹ = 20869251897017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10609260 + ... + 12421549.

It is an arithmetic number, because the mean of its divisors is an integer number (1578623840640).

Almost surely, 2^{20869252421305} is an apocalyptic number.

It is an amenable number.

20869252421305 is a deficient number, since it is larger than the sum of its proper divisors (4388729028935).

20869252421305 is a wasteful number, since it uses less digits than its factorization.

20869252421305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23032368.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 20869252421305 in words is "twenty trillion, eight hundred sixty-nine billion, two hundred fifty-two million, four hundred twenty-one thousand, three hundred five".