20529243007 has 12 divisors (see below), whose sum is σ = 25717953576. Its totient is φ = 16242917040.

The previous prime is 20529242983. The next prime is 20529243013. The reversal of 20529243007 is 70034292502.

It is a happy number.

It is not a de Polignac number, because 20529243007 - 2¹⁵ = 20529210239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20529243907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16113369 + ... + 16114642.

It is an arithmetic number, because the mean of its divisors is an integer number (2143162798).

Almost surely, 2^20529243007 is an apocalyptic number.

20529243007 is a deficient number, since it is larger than the sum of its proper divisors (5188710569).

20529243007 is a wasteful number, since it uses less digits than its factorization.

20529243007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32228038 (or 32228031 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 20529243007 in words is "twenty billion, five hundred twenty-nine million, two hundred forty-three thousand, seven".