216064436162646 has 16 divisors (see below), whose sum is σ = 434716470365184. Its totient is φ = 71590212380904.

The previous prime is 216064436162621. The next prime is 216064436162671. The reversal of 216064436162646 is 646261634460612.

It is an interprime number because it is at equal distance from previous prime (216064436162621) and next prime (216064436162671).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107816583910 + ... + 107816585913.

It is an arithmetic number, because the mean of its divisors is an integer number (27169779397824).

Almost surely, 2^{216064436162646} is an apocalyptic number.

216064436162646 is an abundant number, since it is smaller than the sum of its proper divisors (218652034202538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216064436162646 is a wasteful number, since it uses less digits than its factorization.

216064436162646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215633169995.

The product of its (nonzero) digits is 35831808, while the sum is 57.

The spelling of 216064436162646 in words is "two hundred sixteen trillion, sixty-four billion, four hundred thirty-six million, one hundred sixty-two thousand, six hundred forty-six".