20484171527 has 2 divisors, whose sum is σ = 20484171528. Its totient is φ = 20484171526.

The previous prime is 20484171493. The next prime is 20484171553. The reversal of 20484171527 is 72517148402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20484171527 - 2³⁴ = 3304302343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20484171577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10242085763 + 10242085764.

It is an arithmetic number, because the mean of its divisors is an integer number (10242085764).

Almost surely, 2^20484171527 is an apocalyptic number.

20484171527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20484171527 is an equidigital number, since it uses as much as digits as its factorization.

20484171527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125440, while the sum is 41.

The spelling of 20484171527 in words is "twenty billion, four hundred eighty-four million, one hundred seventy-one thousand, five hundred twenty-seven".