20135751412013 has 4 divisors (see below), whose sum is σ = 20135799035100. Its totient is φ = 20135703788928.

The previous prime is 20135751411967. The next prime is 20135751412019. The reversal of 20135751412013 is 31021415753102.

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 6003587849284 + 14132163562729 = 2450222^2 + 3759277^2 .

It is a cyclic number.

It is not a de Polignac number, because 20135751412013 - 2¹⁴ = 20135751395629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135751412019) 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, 23171588 + ... + 24024861.

It is an arithmetic number, because the mean of its divisors is an integer number (5033949758775).

Almost surely, 2^{20135751412013} is an apocalyptic number.

It is an amenable number.

20135751412013 is a deficient number, since it is larger than the sum of its proper divisors (47623087).

20135751412013 is an equidigital number, since it uses as much as digits as its factorization.

20135751412013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47623086.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 20135751412013 in words is "twenty trillion, one hundred thirty-five billion, seven hundred fifty-one million, four hundred twelve thousand, thirteen".