20502040020707 has 16 divisors (see below), whose sum is σ = 23728807065600. Its totient is φ = 17349773594400.

The previous prime is 20502040020697. The next prime is 20502040020733. The reversal of 20502040020707 is 70702004020502.

It is a cyclic number.

It is not a de Polignac number, because 20502040020707 - 2⁴ = 20502040020691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20502040020707.

It is not an unprimeable number, because it can be changed into a prime (20502040020767) 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 in 15 ways as a sum of consecutive naturals, for example, 9088082 + ... + 11117432.

It is an arithmetic number, because the mean of its divisors is an integer number (1483050441600).

Almost surely, 2^{20502040020707} is an apocalyptic number.

20502040020707 is a deficient number, since it is larger than the sum of its proper divisors (3226767044893).

20502040020707 is a wasteful number, since it uses less digits than its factorization.

20502040020707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047706.

The product of its (nonzero) digits is 7840, while the sum is 29.

The spelling of 20502040020707 in words is "twenty trillion, five hundred two billion, forty million, twenty thousand, seven hundred seven".