20145422403 has 12 divisors (see below), whose sum is σ = 29103813960. Its totient is φ = 13428033696.

The previous prime is 20145422393. The next prime is 20145422417. The reversal of 20145422403 is 30422454102.

20145422403 is a `hidden beast` number, since 201 + 4 + 54 + 2 + 2 + 403 = 666.

It is not a de Polignac number, because 20145422403 - 2¹⁴ = 20145406019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20145422503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129633 + ... + 238946.

It is an arithmetic number, because the mean of its divisors is an integer number (2425317830).

Almost surely, 2^20145422403 is an apocalyptic number.

20145422403 is a deficient number, since it is larger than the sum of its proper divisors (8958391557).

20145422403 is a wasteful number, since it uses less digits than its factorization.

20145422403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374658 (or 374655 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20145422403 its reverse (30422454102), we get a palindrome (50567876505).

The spelling of 20145422403 in words is "twenty billion, one hundred forty-five million, four hundred twenty-two thousand, four hundred three".