20629521007 has 2 divisors, whose sum is σ = 20629521008. Its totient is φ = 20629521006.

The previous prime is 20629521001. The next prime is 20629521079. The reversal of 20629521007 is 70012592602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20629521007 - 2¹⁹ = 20628996719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20629521001) 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, 10314760503 + 10314760504.

It is an arithmetic number, because the mean of its divisors is an integer number (10314760504).

Almost surely, 2^20629521007 is an apocalyptic number.

20629521007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20629521007 is an equidigital number, since it uses as much as digits as its factorization.

20629521007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 20629521007 in words is "twenty billion, six hundred twenty-nine million, five hundred twenty-one thousand, seven".