20323255012145 has 8 divisors (see below), whose sum is σ = 24397473666600. Its totient is φ = 16252225575040.

The previous prime is 20323255012127. The next prime is 20323255012147. The reversal of 20323255012145 is 54121055232302.

It can be written as a sum of positive squares in 4 ways, for example, as 5787892886416 + 14535362125729 = 2405804^2 + 3812527^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-20323255012145 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20323255012147) 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, 797290316 + ... + 797315805.

It is an arithmetic number, because the mean of its divisors is an integer number (3049684208325).

Almost surely, 2^{20323255012145} is an apocalyptic number.

It is an amenable number.

20323255012145 is a deficient number, since it is larger than the sum of its proper divisors (4074218654455).

20323255012145 is a wasteful number, since it uses less digits than its factorization.

20323255012145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594608675.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20323255012145 in words is "twenty trillion, three hundred twenty-three billion, two hundred fifty-five million, twelve thousand, one hundred forty-five".