20542601713 has 4 divisors (see below), whose sum is σ = 20553241968. Its totient is φ = 20531961460.

The previous prime is 20542601711. The next prime is 20542601741. The reversal of 20542601713 is 31710624502.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31710624502 = 2 ⋅15855312251.

It is a cyclic number.

It is not a de Polignac number, because 20542601713 - 2¹ = 20542601711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20542601711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5317231 + ... + 5321092.

It is an arithmetic number, because the mean of its divisors is an integer number (5138310492).

Almost surely, 2^20542601713 is an apocalyptic number.

It is an amenable number.

20542601713 is a deficient number, since it is larger than the sum of its proper divisors (10640255).

20542601713 is a wasteful number, since it uses less digits than its factorization.

20542601713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640254.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 20542601713 in words is "twenty billion, five hundred forty-two million, six hundred one thousand, seven hundred thirteen".