20345006254349 has 16 divisors (see below), whose sum is σ = 23570215200768. Its totient is φ = 17199497584512.

The previous prime is 20345006254333. The next prime is 20345006254399. The reversal of 20345006254349 is 94345260054302.

It is a cyclic number.

It is not a de Polignac number, because 20345006254349 - 2⁴ = 20345006254333 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 (20345006254399) 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, 61547099 + ... + 61876775.

It is an arithmetic number, because the mean of its divisors is an integer number (1473138450048).

Almost surely, 2^{20345006254349} is an apocalyptic number.

It is an amenable number.

20345006254349 is a deficient number, since it is larger than the sum of its proper divisors (3225208946419).

20345006254349 is a wasteful number, since it uses less digits than its factorization.

20345006254349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450524.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 20345006254349 in words is "twenty trillion, three hundred forty-five billion, six million, two hundred fifty-four thousand, three hundred forty-nine".