20456654507 has 2 divisors, whose sum is σ = 20456654508. Its totient is φ = 20456654506.

The previous prime is 20456654443. The next prime is 20456654521. The reversal of 20456654507 is 70545665402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20456654507 - 2⁶ = 20456654443 is a prime.

It is not a weakly prime, because it can be changed into another prime (20456654527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10228327253 + 10228327254.

It is an arithmetic number, because the mean of its divisors is an integer number (10228327254).

Almost surely, 2^20456654507 is an apocalyptic number.

20456654507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20456654507 is an equidigital number, since it uses as much as digits as its factorization.

20456654507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 20456654507 in words is "twenty billion, four hundred fifty-six million, six hundred fifty-four thousand, five hundred seven".