38663345213 has 4 divisors (see below), whose sum is σ = 38767000668. Its totient is φ = 38559689760.

The previous prime is 38663345183. The next prime is 38663345221. The reversal of 38663345213 is 31254336683.

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 26413725529 + 12249619684 = 162523^2 + 110678^2 .

It is a cyclic number.

It is not a de Polignac number, because 38663345213 - 2⁸ = 38663344957 is a prime.

It is a super-2 number, since 2×38663345213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38663345243) 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, 51827168 + ... + 51827913.

It is an arithmetic number, because the mean of its divisors is an integer number (9691750167).

Almost surely, 2^38663345213 is an apocalyptic number.

It is an amenable number.

38663345213 is a deficient number, since it is larger than the sum of its proper divisors (103655455).

38663345213 is a wasteful number, since it uses less digits than its factorization.

38663345213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103655454.

The product of its digits is 933120, while the sum is 44.

The spelling of 38663345213 in words is "thirty-eight billion, six hundred sixty-three million, three hundred forty-five thousand, two hundred thirteen".