20145320506043 has 8 divisors (see below), whose sum is σ = 20345150518368. Its totient is φ = 19945572116544.

The previous prime is 20145320506009. The next prime is 20145320506061. The reversal of 20145320506043 is 34060502354102.

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 20145320506043 - 2¹⁴ = 20145320489659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20145320505994 and 20145320506012.

It is not an unprimeable number, because it can be changed into a prime (20145320506243) 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, 19909580 + ... + 20896937.

It is an arithmetic number, because the mean of its divisors is an integer number (2543143814796).

Almost surely, 2^{20145320506043} is an apocalyptic number.

20145320506043 is a deficient number, since it is larger than the sum of its proper divisors (199830012325).

20145320506043 is a wasteful number, since it uses less digits than its factorization.

20145320506043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40811413.

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 20145320506043 in words is "twenty trillion, one hundred forty-five billion, three hundred twenty million, five hundred six thousand, forty-three".