380128075081 has 4 divisors (see below), whose sum is σ = 380204060112. Its totient is φ = 380052090052.

The previous prime is 380128075027. The next prime is 380128075127. The reversal of 380128075081 is 180570821083.

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: 180570821083 = 3299 ⋅54735017.

It is a cyclic number.

It is not a de Polignac number, because 380128075081 - 2⁹ = 380128074569 is a prime.

It is a super-2 number, since 2×380128075081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380128075681) 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, 37985011 + ... + 37995016.

It is an arithmetic number, because the mean of its divisors is an integer number (95051015028).

Almost surely, 2^380128075081 is an apocalyptic number.

It is an amenable number.

380128075081 is a deficient number, since it is larger than the sum of its proper divisors (75985031).

380128075081 is an equidigital number, since it uses as much as digits as its factorization.

380128075081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75985030.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 380128075081 in words is "three hundred eighty billion, one hundred twenty-eight million, seventy-five thousand, eighty-one".