216619694392946 has 64 divisors (see below), whose sum is σ = 367003923148800. Its totient is φ = 95142879754560.

The previous prime is 216619694392919. The next prime is 216619694392951. The reversal of 216619694392946 is 649293496916612.

It is a super-2 number, since 2×216619694392946² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1547313011 + ... + 1547453001.

It is an arithmetic number, because the mean of its divisors is an integer number (5734436299200).

Almost surely, 2^{216619694392946} is an apocalyptic number.

216619694392946 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216619694392946 is a deficient number, since it is larger than the sum of its proper divisors (150384228755854).

216619694392946 is a wasteful number, since it uses less digits than its factorization.

216619694392946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153231.

The product of its digits is 1632586752, while the sum is 77.

The spelling of 216619694392946 in words is "two hundred sixteen trillion, six hundred nineteen billion, six hundred ninety-four million, three hundred ninety-two thousand, nine hundred forty-six".