39803647457213 has 4 divisors (see below), whose sum is σ = 39968807820348. Its totient is φ = 39638487094080.

The previous prime is 39803647457183. The next prime is 39803647457257. The reversal of 39803647457213 is 31275474630893.

It is a happy number.

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 14498099523769 + 25305547933444 = 3807637^2 + 5030462^2 .

It is a cyclic number.

It is not a de Polignac number, because 39803647457213 - 2¹⁴ = 39803647440829 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 (39803647457263) 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, 82580181206 + ... + 82580181687.

It is an arithmetic number, because the mean of its divisors is an integer number (9992201955087).

It is a 1-persistent number, because it is pandigital, but 2⋅39803647457213 = 79607294914426 is not.

Almost surely, 2^{39803647457213} is an apocalyptic number.

It is an amenable number.

39803647457213 is a deficient number, since it is larger than the sum of its proper divisors (165160363135).

39803647457213 is a wasteful number, since it uses less digits than its factorization.

39803647457213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165160363134.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 39803647457213 in words is "thirty-nine trillion, eight hundred three billion, six hundred forty-seven million, four hundred fifty-seven thousand, two hundred thirteen".