20006762506 has 16 divisors (see below), whose sum is σ = 30660353280. Its totient is φ = 9786807280.

The previous prime is 20006762431. The next prime is 20006762533. The reversal of 20006762506 is 60526760002.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 215580 + ... + 294088.

It is an arithmetic number, because the mean of its divisors is an integer number (1916272080).

Almost surely, 2^20006762506 is an apocalyptic number.

20006762506 is a deficient number, since it is larger than the sum of its proper divisors (10653590774).

20006762506 is a wasteful number, since it uses less digits than its factorization.

20006762506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81269.

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

The spelling of 20006762506 in words is "twenty billion, six million, seven hundred sixty-two thousand, five hundred six".