216199640090 has 32 divisors (see below), whose sum is σ = 444955382784. Its totient is φ = 74091951360.

The previous prime is 216199640081. The next prime is 216199640123. The reversal of 216199640090 is 90046991612.

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, 545231 + ... + 854210.

It is an arithmetic number, because the mean of its divisors is an integer number (13904855712).

Almost surely, 2^216199640090 is an apocalyptic number.

216199640090 is an abundant number, since it is smaller than the sum of its proper divisors (228755742694).

216199640090 is a wasteful number, since it uses less digits than its factorization.

216199640090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401662.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 216199640090 in words is "two hundred sixteen billion, one hundred ninety-nine million, six hundred forty thousand, ninety".