38421575161 has 4 divisors (see below), whose sum is σ = 38817673972. Its totient is φ = 38025476352.

The previous prime is 38421575147. The next prime is 38421575189. The reversal of 38421575161 is 16157512483.

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 14665210000 + 23756365161 = 121100^2 + 154131^2 .

It is a cyclic number.

It is not a de Polignac number, because 38421575161 - 2¹³ = 38421566969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38421575111) 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, 198049260 + ... + 198049453.

It is an arithmetic number, because the mean of its divisors is an integer number (9704418493).

Almost surely, 2^38421575161 is an apocalyptic number.

It is an amenable number.

38421575161 is a deficient number, since it is larger than the sum of its proper divisors (396098811).

38421575161 is an equidigital number, since it uses as much as digits as its factorization.

38421575161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396098810.

The product of its digits is 201600, while the sum is 43.

The spelling of 38421575161 in words is "thirty-eight billion, four hundred twenty-one million, five hundred seventy-five thousand, one hundred sixty-one".