20302500551 has 2 divisors, whose sum is σ = 20302500552. Its totient is φ = 20302500550.

The previous prime is 20302500541. The next prime is 20302500577. The reversal of 20302500551 is 15500520302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302500551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302500511) 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, 10151250275 + 10151250276.

It is an arithmetic number, because the mean of its divisors is an integer number (10151250276).

Almost surely, 2^20302500551 is an apocalyptic number.

20302500551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302500551 is an equidigital number, since it uses as much as digits as its factorization.

20302500551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The spelling of 20302500551 in words is "twenty billion, three hundred two million, five hundred thousand, five hundred fifty-one".