404451616516 has 12 divisors (see below), whose sum is σ = 738563821632. Its totient is φ = 193433381768.

The previous prime is 404451616507. The next prime is 404451616523. The reversal of 404451616516 is 615616154404.

It is a super-2 number, since 2×404451616516² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198106520 + ... + 2198106703.

It is an arithmetic number, because the mean of its divisors is an integer number (61546985136).

Almost surely, 2^404451616516 is an apocalyptic number.

404451616516 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

404451616516 is a deficient number, since it is larger than the sum of its proper divisors (334112205116).

404451616516 is a wasteful number, since it uses less digits than its factorization.

404451616516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396213250 (or 4396213248 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 404451616516 in words is "four hundred four billion, four hundred fifty-one million, six hundred sixteen thousand, five hundred sixteen".