216740967125 has 16 divisors (see below), whose sum is σ = 271774716096. Its totient is φ = 172570986000.

The previous prime is 216740967109. The next prime is 216740967139. The reversal of 216740967125 is 521769047612.

It is a happy number.

It is not a de Polignac number, because 216740967125 - 2⁴ = 216740967109 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 4082459 + ... + 4135208.

It is an arithmetic number, because the mean of its divisors is an integer number (16985919756).

Almost surely, 2^216740967125 is an apocalyptic number.

216740967125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216740967125 is a deficient number, since it is larger than the sum of its proper divisors (55033748971).

216740967125 is an equidigital number, since it uses as much as digits as its factorization.

216740967125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217893 (or 8217883 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 216740967125 in words is "two hundred sixteen billion, seven hundred forty million, nine hundred sixty-seven thousand, one hundred twenty-five".