20365111652345 has 8 divisors (see below), whose sum is σ = 24447691344264. Its totient is φ = 16285717747584.

The previous prime is 20365111652309. The next prime is 20365111652359. The reversal of 20365111652345 is 54325611156302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1957545169129 + 18407566483216 = 1399123^2 + 4290404^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20365111652345 - 2²⁸ = 20364843216889 is a prime.

It is a super-2 number, since 2×20365111652345² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20365111652296 and 20365111652305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796432724 + ... + 796458293.

It is an arithmetic number, because the mean of its divisors is an integer number (3055961418033).

Almost surely, 2^{20365111652345} is an apocalyptic number.

It is an amenable number.

20365111652345 is a deficient number, since it is larger than the sum of its proper divisors (4082579691919).

20365111652345 is a wasteful number, since it uses less digits than its factorization.

20365111652345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592893579.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20365111652345 in words is "twenty trillion, three hundred sixty-five billion, one hundred eleven million, six hundred fifty-two thousand, three hundred forty-five".