216608651746 has 8 divisors (see below), whose sum is σ = 331826019840. Its totient is φ = 105999978468.

The previous prime is 216608651731. The next prime is 216608651759. The reversal of 216608651746 is 647156806612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216608651746² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216608651693 and 216608651702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1152173586 + ... + 1152173773.

It is an arithmetic number, because the mean of its divisors is an integer number (41478252480).

Almost surely, 2^216608651746 is an apocalyptic number.

216608651746 is a deficient number, since it is larger than the sum of its proper divisors (115217368094).

216608651746 is a wasteful number, since it uses less digits than its factorization.

216608651746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304347408.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 216608651746 in words is "two hundred sixteen billion, six hundred eight million, six hundred fifty-one thousand, seven hundred forty-six".