20333553031145 has 8 divisors (see below), whose sum is σ = 24401018766600. Its totient is φ = 16266339005440.

The previous prime is 20333553031133. The next prime is 20333553031163. The reversal of 20333553031145 is 54113035533302.

It can be written as a sum of positive squares in 4 ways, for example, as 2581394915584 + 17752158115561 = 1606672^2 + 4213331^2 .

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

It is not a de Polignac number, because 20333553031145 - 2⁶ = 20333553031081 is a prime.

It is a super-2 number, since 2×20333553031145² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20333553031099 and 20333553031108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62749670 + ... + 63072879.

It is an arithmetic number, because the mean of its divisors is an integer number (3050127345825).

Almost surely, 2^{20333553031145} is an apocalyptic number.

It is an amenable number.

20333553031145 is a deficient number, since it is larger than the sum of its proper divisors (4067465735455).

20333553031145 is a wasteful number, since it uses less digits than its factorization.

20333553031145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125854875.

The product of its (nonzero) digits is 243000, while the sum is 38.

Adding to 20333553031145 its reverse (54113035533302), we get a palindrome (74446588564447).

The spelling of 20333553031145 in words is "twenty trillion, three hundred thirty-three billion, five hundred fifty-three million, thirty-one thousand, one hundred forty-five".