38866020553 has 4 divisors (see below), whose sum is σ = 39446110480. Its totient is φ = 38285930628.

The previous prime is 38866020539. The next prime is 38866020577. The reversal of 38866020553 is 35502066883.

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: 35502066883 = 103 ⋅344680261.

It is a cyclic number.

It is not a de Polignac number, because 38866020553 - 2⁵ = 38866020521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38866020533) 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, 290044863 + ... + 290044996.

It is an arithmetic number, because the mean of its divisors is an integer number (9861527620).

Almost surely, 2^38866020553 is an apocalyptic number.

It is an amenable number.

38866020553 is a deficient number, since it is larger than the sum of its proper divisors (580089927).

38866020553 is an equidigital number, since it uses as much as digits as its factorization.

38866020553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580089926.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 38866020553 in words is "thirty-eight billion, eight hundred sixty-six million, twenty thousand, five hundred fifty-three".