20514420145 has 8 divisors (see below), whose sum is σ = 24964027200. Its totient is φ = 16180387440.

The previous prime is 20514420127. The next prime is 20514420161. The reversal of 20514420145 is 54102441502.

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-20514420145 is a prime.

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, 28893195 + ... + 28893904.

It is an arithmetic number, because the mean of its divisors is an integer number (3120503400).

Almost surely, 2^20514420145 is an apocalyptic number.

It is an amenable number.

20514420145 is a deficient number, since it is larger than the sum of its proper divisors (4449607055).

20514420145 is an equidigital number, since it uses as much as digits as its factorization.

20514420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57787175.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 20514420145 its reverse (54102441502), we get a palindrome (74616861647).

The spelling of 20514420145 in words is "twenty billion, five hundred fourteen million, four hundred twenty thousand, one hundred forty-five".