20306325765 has 32 divisors (see below), whose sum is σ = 35520454656. Its totient is φ = 9824189760.

The previous prime is 20306325761. The next prime is 20306325773. The reversal of 20306325765 is 56752360302.

It is not a de Polignac number, because 20306325765 - 2² = 20306325761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306325761) 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, 56509 + ... + 209298.

It is an arithmetic number, because the mean of its divisors is an integer number (1110014208).

Almost surely, 2^20306325765 is an apocalyptic number.

It is an amenable number.

20306325765 is a deficient number, since it is larger than the sum of its proper divisors (15214128891).

20306325765 is a wasteful number, since it uses less digits than its factorization.

20306325765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266289.

The product of its (nonzero) digits is 226800, while the sum is 39.

The spelling of 20306325765 in words is "twenty billion, three hundred six million, three hundred twenty-five thousand, seven hundred sixty-five".