216091430375 has 16 divisors (see below), whose sum is σ = 269781351840. Its totient is φ = 172809524800.

The previous prime is 216091430351. The next prime is 216091430377. The reversal of 216091430375 is 573034190612.

It is not a de Polignac number, because 216091430375 - 2⁸ = 216091430119 is a prime.

It is a super-3 number, since 3×216091430375³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216091430377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24392 + ... + 657858.

It is an arithmetic number, because the mean of its divisors is an integer number (16861334490).

Almost surely, 2^216091430375 is an apocalyptic number.

216091430375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216091430375 is a deficient number, since it is larger than the sum of its proper divisors (53689921465).

216091430375 is an equidigital number, since it uses as much as digits as its factorization.

216091430375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636211 (or 636201 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 216091430375 in words is "two hundred sixteen billion, ninety-one million, four hundred thirty thousand, three hundred seventy-five".