20354205453713 has 8 divisors (see below), whose sum is σ = 20373099201480. Its totient is φ = 20335316981760.

The previous prime is 20354205453689. The next prime is 20354205453719. The reversal of 20354205453713 is 31735450245302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7466048013649 + 12888157440064 = 2732407^2 + 3590008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20354205453713 - 2²² = 20354201259409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20354205453719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6421733 + ... + 9052461.

It is an arithmetic number, because the mean of its divisors is an integer number (2546637400185).

Almost surely, 2^{20354205453713} is an apocalyptic number.

It is an amenable number.

20354205453713 is a deficient number, since it is larger than the sum of its proper divisors (18893747767).

20354205453713 is a wasteful number, since it uses less digits than its factorization.

20354205453713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637907.

The product of its (nonzero) digits is 1512000, while the sum is 44.

The spelling of 20354205453713 in words is "twenty trillion, three hundred fifty-four billion, two hundred five million, four hundred fifty-three thousand, seven hundred thirteen".