216078953 has 8 divisors (see below), whose sum is σ = 219701472. Its totient is φ = 212468256.

The previous prime is 216078949. The next prime is 216078977. The reversal of 216078953 is 359870612.

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

It is not a de Polignac number, because 216078953 - 2² = 216078949 is a prime.

It is a super-2 number, since 2×216078953² = 93380227859152418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216078953.

It is not an unprimeable number, because it can be changed into a prime (216078923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38726 + ... + 43952.

It is an arithmetic number, because the mean of its divisors is an integer number (27462684).

Almost surely, 2^216078953 is an apocalyptic number.

It is an amenable number.

216078953 is a deficient number, since it is larger than the sum of its proper divisors (3622519).

216078953 is an equidigital number, since it uses as much as digits as its factorization.

216078953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 216078953 is about 14699.6242468983. The cubic root of 216078953 is about 600.0730957243.

The spelling of 216078953 in words is "two hundred sixteen million, seventy-eight thousand, nine hundred fifty-three".