381504476161 has 8 divisors (see below), whose sum is σ = 381891286440. Its totient is φ = 381117854208.

The previous prime is 381504476123. The next prime is 381504476173. The reversal of 381504476161 is 161674405183.

It can be written as a sum of positive squares in 4 ways, for example, as 3733210000 + 377771266161 = 61100^2 + 614631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381504476161 - 2²¹ = 381502379009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381504456161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4198275 + ... + 4288183.

It is an arithmetic number, because the mean of its divisors is an integer number (47736410805).

Almost surely, 2^381504476161 is an apocalyptic number.

It is an amenable number.

381504476161 is a deficient number, since it is larger than the sum of its proper divisors (386810279).

381504476161 is a wasteful number, since it uses less digits than its factorization.

381504476161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94163.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 381504476161 in words is "three hundred eighty-one billion, five hundred four million, four hundred seventy-six thousand, one hundred sixty-one".