20365111652353 has 4 divisors (see below), whose sum is σ = 21931658702548. Its totient is φ = 18798564602160.

The previous prime is 20365111652309. The next prime is 20365111652359. The reversal of 20365111652353 is 35325611156302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13342012739584 + 7023098912769 = 3652672^2 + 2650113^2 .

It is a cyclic number.

It is not a de Polignac number, because 20365111652353 - 2¹⁷ = 20365111521281 is a prime.

It is a super-2 number, since 2×20365111652353² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20365111652359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783273525078 + ... + 783273525103.

It is an arithmetic number, because the mean of its divisors is an integer number (5482914675637).

Almost surely, 2^{20365111652353} is an apocalyptic number.

It is an amenable number.

20365111652353 is a deficient number, since it is larger than the sum of its proper divisors (1566547050195).

20365111652353 is a wasteful number, since it uses less digits than its factorization.

20365111652353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566547050194.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 20365111652353 in words is "twenty trillion, three hundred sixty-five billion, one hundred eleven million, six hundred fifty-two thousand, three hundred fifty-three".