216688076876402 has 16 divisors (see below), whose sum is σ = 325052807829120. Its totient is φ = 108337141222752.

The previous prime is 216688076876399. The next prime is 216688076876417. The reversal of 216688076876402 is 204678670886612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3756113174 + ... + 3756170862.

It is an arithmetic number, because the mean of its divisors is an integer number (20315800489320).

Almost surely, 2^{216688076876402} is an apocalyptic number.

216688076876402 is a deficient number, since it is larger than the sum of its proper divisors (108364730952718).

216688076876402 is a wasteful number, since it uses less digits than its factorization.

216688076876402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144697.

The product of its (nonzero) digits is 520224768, while the sum is 71.

The spelling of 216688076876402 in words is "two hundred sixteen trillion, six hundred eighty-eight billion, seventy-six million, eight hundred seventy-six thousand, four hundred two".