404445602054623 has 4 divisors (see below), whose sum is σ = 428236519822560. Its totient is φ = 380654684286688.

The previous prime is 404445602054609. The next prime is 404445602054651. The reversal of 404445602054623 is 326450206544404.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-404445602054623 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 (404445602054603) 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, 11895458883943 + ... + 11895458883976.

It is an arithmetic number, because the mean of its divisors is an integer number (107059129955640).

Almost surely, 2^{404445602054623} is an apocalyptic number.

404445602054623 is a deficient number, since it is larger than the sum of its proper divisors (23790917767937).

404445602054623 is a wasteful number, since it uses less digits than its factorization.

404445602054623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23790917767936.

The product of its (nonzero) digits is 11059200, while the sum is 49.

The spelling of 404445602054623 in words is "four hundred four trillion, four hundred forty-five billion, six hundred two million, fifty-four thousand, six hundred twenty-three".