216091430351 has 2 divisors, whose sum is σ = 216091430352. Its totient is φ = 216091430350.

The previous prime is 216091430327. The next prime is 216091430377. The reversal of 216091430351 is 153034190612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216091430351 - 2²² = 216087236047 is a prime.

It is a super-2 number, since 2×216091430351² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216091400351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108045715175 + 108045715176.

It is an arithmetic number, because the mean of its divisors is an integer number (108045715176).

Almost surely, 2^216091430351 is an apocalyptic number.

216091430351 is a deficient number, since it is larger than the sum of its proper divisors (1).

216091430351 is an equidigital number, since it uses as much as digits as its factorization.

216091430351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 216091430351 in words is "two hundred sixteen billion, ninety-one million, four hundred thirty thousand, three hundred fifty-one".