20045155343 has 4 divisors (see below), whose sum is σ = 20198171928. Its totient is φ = 19892138760.

The previous prime is 20045155331. The next prime is 20045155357. The reversal of 20045155343 is 34355154002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20045155343 - 2¹⁶ = 20045089807 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 (20045155313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76508096 + ... + 76508357.

It is an arithmetic number, because the mean of its divisors is an integer number (5049542982).

Almost surely, 2^20045155343 is an apocalyptic number.

20045155343 is a deficient number, since it is larger than the sum of its proper divisors (153016585).

20045155343 is a wasteful number, since it uses less digits than its factorization.

20045155343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153016584.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 20045155343 in words is "twenty billion, forty-five million, one hundred fifty-five thousand, three hundred forty-three".