140216655 has 16 divisors (see below), whose sum is σ = 224560224. Its totient is φ = 74711040.

The previous prime is 140216647. The next prime is 140216719. The reversal of 140216655 is 556612041.

140216655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140216655 - 2³ = 140216647 is a prime.

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, 14415 + ... + 22095.

It is an arithmetic number, because the mean of its divisors is an integer number (14035014).

Almost surely, 2^140216655 is an apocalyptic number.

140216655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140216655 is a deficient number, since it is larger than the sum of its proper divisors (84343569).

140216655 is a wasteful number, since it uses less digits than its factorization.

140216655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 140216655 is about 11841.3113716345. The cubic root of 140216655 is about 519.5171244691.

Adding to 140216655 its reverse (556612041), we get a palindrome (696828696).

The spelling of 140216655 in words is "one hundred forty million, two hundred sixteen thousand, six hundred fifty-five".