20554531424507 has 2 divisors, whose sum is σ = 20554531424508. Its totient is φ = 20554531424506.

The previous prime is 20554531424477. The next prime is 20554531424533. The reversal of 20554531424507 is 70542413545502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20554531424507 is a prime.

It is not a weakly prime, because it can be changed into another prime (20554531424597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277265712253 + 10277265712254.

It is an arithmetic number, because the mean of its divisors is an integer number (10277265712254).

Almost surely, 2^{20554531424507} is an apocalyptic number.

20554531424507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20554531424507 is an equidigital number, since it uses as much as digits as its factorization.

20554531424507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360000, while the sum is 47.

The spelling of 20554531424507 in words is "twenty trillion, five hundred fifty-four billion, five hundred thirty-one million, four hundred twenty-four thousand, five hundred seven".