20005265135343 has 16 divisors (see below), whose sum is σ = 28245770987616. Its totient is φ = 12550970449920.

The previous prime is 20005265135329. The next prime is 20005265135347. The reversal of 20005265135343 is 34353156250002.

It is not a de Polignac number, because 20005265135343 - 2⁸ = 20005265135087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005265135347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20659096 + ... + 21605757.

It is an arithmetic number, because the mean of its divisors is an integer number (1765360686726).

Almost surely, 2^{20005265135343} is an apocalyptic number.

20005265135343 is a deficient number, since it is larger than the sum of its proper divisors (8240505852273).

20005265135343 is a wasteful number, since it uses less digits than its factorization.

20005265135343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42274154.

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 20005265135343 in words is "twenty trillion, five billion, two hundred sixty-five million, one hundred thirty-five thousand, three hundred forty-three".