20145355001 has 4 divisors (see below), whose sum is σ = 20152550004. Its totient is φ = 20138160000.

The previous prime is 20145354973. The next prime is 20145355007. The reversal of 20145355001 is 10055354102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16728835600 + 3416519401 = 129340^2 + 58451^2 .

It is a cyclic number.

It is not a de Polignac number, because 20145355001 - 2¹⁴ = 20145338617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20145355007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3593300 + ... + 3598901.

It is an arithmetic number, because the mean of its divisors is an integer number (5038137501).

Almost surely, 2^20145355001 is an apocalyptic number.

It is an amenable number.

20145355001 is a deficient number, since it is larger than the sum of its proper divisors (7195003).

20145355001 is an equidigital number, since it uses as much as digits as its factorization.

20145355001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195002.

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 20145355001 in words is "twenty billion, one hundred forty-five million, three hundred fifty-five thousand, one".