216360036381816 has 64 divisors (see below), whose sum is σ = 601588740362400. Its totient is φ = 72049375411200.

The previous prime is 216360036381809. The next prime is 216360036381823. The reversal of 216360036381816 is 618183630063612.

216360036381816 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 600 + 3 + 6 + 3 + 8 + 18 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (216360036381809) and next prime (216360036381823).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490311705 + ... + 490752776.

Almost surely, 2^{216360036381816} is an apocalyptic number.

It is an amenable number.

216360036381816 is an abundant number, since it is smaller than the sum of its proper divisors (385228703980584).

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

216360036381816 is a wasteful number, since it uses less digits than its factorization.

216360036381816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981065517 (or 981065507 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 216360036381816 in words is "two hundred sixteen trillion, three hundred sixty billion, thirty-six million, three hundred eighty-one thousand, eight hundred sixteen".