216401503210601 has 12 divisors (see below), whose sum is σ = 221835245339376. Its totient is φ = 211097791800480.

The previous prime is 216401503210493. The next prime is 216401503210663. The reversal of 216401503210601 is 106012305104612.

It is a de Polignac number, because none of the positive numbers 2^k-216401503210601 is a prime.

It is a super-2 number, since 2×216401503210601² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216401503210201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6047810 + ... + 21665156.

It is an arithmetic number, because the mean of its divisors is an integer number (18486270444948).

Almost surely, 2^{216401503210601} is an apocalyptic number.

It is an amenable number.

216401503210601 is a deficient number, since it is larger than the sum of its proper divisors (5433742128775).

216401503210601 is an equidigital number, since it uses as much as digits as its factorization.

216401503210601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15625672 (or 15625631 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 216401503210601 in words is "two hundred sixteen trillion, four hundred one billion, five hundred three million, two hundred ten thousand, six hundred one".