20610640012353 has 4 divisors (see below), whose sum is σ = 27480853349808. Its totient is φ = 13740426674900.

The previous prime is 20610640012331. The next prime is 20610640012357. The reversal of 20610640012353 is 35321004601602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20610640012353 - 2¹³ = 20610640004161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20610640012357) 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, 3435106668723 + ... + 3435106668728.

It is an arithmetic number, because the mean of its divisors is an integer number (6870213337452).

Almost surely, 2^{20610640012353} is an apocalyptic number.

It is an amenable number.

20610640012353 is a deficient number, since it is larger than the sum of its proper divisors (6870213337455).

20610640012353 is an equidigital number, since it uses as much as digits as its factorization.

20610640012353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870213337454.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 20610640012353 its reverse (35321004601602), we get a palindrome (55931644613955).

The spelling of 20610640012353 in words is "twenty trillion, six hundred ten billion, six hundred forty million, twelve thousand, three hundred fifty-three".