16640456134 has 8 divisors (see below), whose sum is σ = 24961917528. Its totient is φ = 8319816960.

The previous prime is 16640456089. The next prime is 16640456149. The reversal of 16640456134 is 43165404661.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152187 + ... + 237574.

It is an arithmetic number, because the mean of its divisors is an integer number (3120239691).

Almost surely, 2^16640456134 is an apocalyptic number.

16640456134 is a deficient number, since it is larger than the sum of its proper divisors (8321461394).

16640456134 is a wasteful number, since it uses less digits than its factorization.

16640456134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411110.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 16640456134 in words is "sixteen billion, six hundred forty million, four hundred fifty-six thousand, one hundred thirty-four".