20514326417 has 4 divisors (see below), whose sum is σ = 22092351540. Its totient is φ = 18936301296.

The previous prime is 20514326387. The next prime is 20514326423. The reversal of 20514326417 is 71462341502.

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 2611618816 + 17902707601 = 51104^2 + 133801^2 .

It is a cyclic number.

It is not a de Polignac number, because 20514326417 - 2²² = 20510132113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20514326017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789012542 + ... + 789012567.

It is an arithmetic number, because the mean of its divisors is an integer number (5523087885).

Almost surely, 2^20514326417 is an apocalyptic number.

It is an amenable number.

20514326417 is a deficient number, since it is larger than the sum of its proper divisors (1578025123).

20514326417 is a wasteful number, since it uses less digits than its factorization.

20514326417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578025122.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 20514326417 its reverse (71462341502), we get a palindrome (91976667919).

The spelling of 20514326417 in words is "twenty billion, five hundred fourteen million, three hundred twenty-six thousand, four hundred seventeen".