20417105527 has 32 divisors (see below), whose sum is σ = 25725772800. Its totient is φ = 16101156960.

The previous prime is 20417105461. The next prime is 20417105537. The reversal of 20417105527 is 72550171402.

It is a de Polignac number, because none of the positive numbers 2^k-20417105527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20417105492 and 20417105501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20417105537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1379388 + ... + 1394110.

It is an arithmetic number, because the mean of its divisors is an integer number (803930400).

Almost surely, 2^20417105527 is an apocalyptic number.

20417105527 is a deficient number, since it is larger than the sum of its proper divisors (5308667273).

20417105527 is a wasteful number, since it uses less digits than its factorization.

20417105527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15068 (or 15054 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

Adding to 20417105527 its reverse (72550171402), we get a palindrome (92967276929).

The spelling of 20417105527 in words is "twenty billion, four hundred seventeen million, one hundred five thousand, five hundred twenty-seven".