84406116321 has 12 divisors (see below), whose sum is σ = 121980598480. Its totient is φ = 56242750680.

The previous prime is 84406116313. The next prime is 84406116331. The reversal of 84406116321 is 12361160448.

84406116321 is a `hidden beast` number, since 8 + 4 + 4 + 0 + 6 + 11 + 632 + 1 = 666.

It is not a de Polignac number, because 84406116321 - 2³ = 84406116313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84406116331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2313691 + ... + 2349888.

Almost surely, 2^84406116321 is an apocalyptic number.

It is an amenable number.

84406116321 is a deficient number, since it is larger than the sum of its proper divisors (37574482159).

84406116321 is a wasteful number, since it uses less digits than its factorization.

84406116321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665596 (or 4665593 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 84406116321 its reverse (12361160448), we get a palindrome (96767276769).

The spelling of 84406116321 in words is "eighty-four billion, four hundred six million, one hundred sixteen thousand, three hundred twenty-one".