20105264455 has 8 divisors (see below), whose sum is σ = 25545512592. Its totient is φ = 15138081408.

The previous prime is 20105264453. The next prime is 20105264461. The reversal of 20105264455 is 55446250102.

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 20105264455 - 2¹ = 20105264453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20105264455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105264453) 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, 118266177 + ... + 118266346.

It is an arithmetic number, because the mean of its divisors is an integer number (3193189074).

Almost surely, 2^20105264455 is an apocalyptic number.

20105264455 is a deficient number, since it is larger than the sum of its proper divisors (5440248137).

20105264455 is a wasteful number, since it uses less digits than its factorization.

20105264455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236532545.

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 20105264455 in words is "twenty billion, one hundred five million, two hundred sixty-four thousand, four hundred fifty-five".