20365111653253 has 16 divisors (see below), whose sum is σ = 21582794620656. Its totient is φ = 19149626833920.

The previous prime is 20365111653223. The next prime is 20365111653283. The reversal of 20365111653253 is 35235611156302.

It is an interprime number because it is at equal distance from previous prime (20365111653223) and next prime (20365111653283).

It can be written as a sum of positive squares in 8 ways, for example, as 1345456163844 + 19019655489409 = 1159938^2 + 4361153^2 .

It is a cyclic number.

It is not a de Polignac number, because 20365111653253 - 2⁵ = 20365111653221 is a prime.

It is a super-2 number, since 2×20365111653253² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365111653223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127000875 + ... + 127161127.

It is an arithmetic number, because the mean of its divisors is an integer number (1348924663791).

Almost surely, 2^{20365111653253} is an apocalyptic number.

It is an amenable number.

20365111653253 is a deficient number, since it is larger than the sum of its proper divisors (1217682967403).

20365111653253 is a wasteful number, since it uses less digits than its factorization.

20365111653253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167064.

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

The spelling of 20365111653253 in words is "twenty trillion, three hundred sixty-five billion, one hundred eleven million, six hundred fifty-three thousand, two hundred fifty-three".