20092506721 has 32 divisors (see below), whose sum is σ = 23740416000. Its totient is φ = 16649318016.

The previous prime is 20092506719. The next prime is 20092506779. The reversal of 20092506721 is 12760529002.

It is a cyclic number.

It is not a de Polignac number, because 20092506721 - 2¹ = 20092506719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20092506701) 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 31 ways as a sum of consecutive naturals, for example, 10050280 + ... + 10052278.

It is an arithmetic number, because the mean of its divisors is an integer number (741888000).

Almost surely, 2^20092506721 is an apocalyptic number.

It is an amenable number.

20092506721 is a deficient number, since it is larger than the sum of its proper divisors (3647909279).

20092506721 is a wasteful number, since it uses less digits than its factorization.

20092506721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413.

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

The spelling of 20092506721 in words is "twenty billion, ninety-two million, five hundred six thousand, seven hundred twenty-one".