216355352690 has 16 divisors (see below), whose sum is σ = 398496371328. Its totient is φ = 84529532976.

The previous prime is 216355352677. The next prime is 216355352699. The reversal of 216355352690 is 96253553612.

216355352690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216355352690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216355352699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251575562 + ... + 251576421.

It is an arithmetic number, because the mean of its divisors is an integer number (24906023208).

Almost surely, 2^216355352690 is an apocalyptic number.

216355352690 is a deficient number, since it is larger than the sum of its proper divisors (182141018638).

216355352690 is a wasteful number, since it uses less digits than its factorization.

216355352690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503152033.

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 216355352690 in words is "two hundred sixteen billion, three hundred fifty-five million, three hundred fifty-two thousand, six hundred ninety".