384455077631447 has 4 divisors (see below), whose sum is σ = 401170515789360. Its totient is φ = 367739639473536.

The previous prime is 384455077631431. The next prime is 384455077631473. The reversal of 384455077631447 is 744136770554483.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 384455077631447 - 2⁴ = 384455077631431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384455077631477) 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, 8357719078922 + ... + 8357719078967.

It is an arithmetic number, because the mean of its divisors is an integer number (100292628947340).

Almost surely, 2^{384455077631447} is an apocalyptic number.

384455077631447 is a deficient number, since it is larger than the sum of its proper divisors (16715438157913).

384455077631447 is a wasteful number, since it uses less digits than its factorization.

384455077631447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16715438157912.

The product of its (nonzero) digits is 948326400, while the sum is 68.

The spelling of 384455077631447 in words is "three hundred eighty-four trillion, four hundred fifty-five billion, seventy-seven million, six hundred thirty-one thousand, four hundred forty-seven".