20524729507 has 2 divisors, whose sum is σ = 20524729508. Its totient is φ = 20524729506.

The previous prime is 20524729469. The next prime is 20524729517. The reversal of 20524729507 is 70592742502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20524729507 is a prime.

It is not a weakly prime, because it can be changed into another prime (20524729517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262364753 + 10262364754.

It is an arithmetic number, because the mean of its divisors is an integer number (10262364754).

Almost surely, 2^20524729507 is an apocalyptic number.

20524729507 is a deficient number, since it is larger than the sum of its proper divisors (1).

20524729507 is an equidigital number, since it uses as much as digits as its factorization.

20524729507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 20524729507 in words is "twenty billion, five hundred twenty-four million, seven hundred twenty-nine thousand, five hundred seven".