20352444145 has 8 divisors (see below), whose sum is σ = 26643199680. Its totient is φ = 14801777520.

The previous prime is 20352444131. The next prime is 20352444173. The reversal of 20352444145 is 54144425302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20352444145 - 2⁷ = 20352444017 is a prime.

It is a super-3 number, since 3×20352444145³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20352444145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185022165 + ... + 185022274.

It is an arithmetic number, because the mean of its divisors is an integer number (3330399960).

Almost surely, 2^20352444145 is an apocalyptic number.

It is an amenable number.

20352444145 is a deficient number, since it is larger than the sum of its proper divisors (6290755535).

20352444145 is a wasteful number, since it uses less digits than its factorization.

20352444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370044455.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 20352444145 its reverse (54144425302), we get a palindrome (74496869447).

The spelling of 20352444145 in words is "twenty billion, three hundred fifty-two million, four hundred forty-four thousand, one hundred forty-five".