380554667081 has 4 divisors (see below), whose sum is σ = 380555915412. Its totient is φ = 380553418752.

The previous prime is 380554667069. The next prime is 380554667107. The reversal of 380554667081 is 180766455083.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 180766455083 = 47 ⋅3846094789.

It can be written as a sum of positive squares in 2 ways, for example, as 205879987600 + 174674679481 = 453740^2 + 417941^2 .

It is a cyclic number.

It is not a de Polignac number, because 380554667081 - 2¹⁰ = 380554666057 is a prime.

It is a super-2 number, since 2×380554667081² (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 (380554667981) 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, 169565 + ... + 888741.

It is an arithmetic number, because the mean of its divisors is an integer number (95138978853).

Almost surely, 2^380554667081 is an apocalyptic number.

It is an amenable number.

380554667081 is a deficient number, since it is larger than the sum of its proper divisors (1248331).

380554667081 is an equidigital number, since it uses as much as digits as its factorization.

380554667081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248330.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 380554667081 in words is "three hundred eighty billion, five hundred fifty-four million, six hundred sixty-seven thousand, eighty-one".