20624521007 has 2 divisors, whose sum is σ = 20624521008. Its totient is φ = 20624521006.

The previous prime is 20624520997. The next prime is 20624521063. The reversal of 20624521007 is 70012542602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20624521007 - 2¹² = 20624516911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20629521007) 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, 10312260503 + 10312260504.

It is an arithmetic number, because the mean of its divisors is an integer number (10312260504).

Almost surely, 2^20624521007 is an apocalyptic number.

20624521007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20624521007 is an equidigital number, since it uses as much as digits as its factorization.

20624521007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 20624521007 in words is "twenty billion, six hundred twenty-four million, five hundred twenty-one thousand, seven".