215212240354 has 32 divisors (see below), whose sum is σ = 338941163520. Its totient is φ = 102353284800.

The previous prime is 215212240351. The next prime is 215212240363. The reversal of 215212240354 is 453042212512.

It is a happy number.

215212240354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (215212240351) 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 15 ways as a sum of consecutive naturals, for example, 5361792 + ... + 5401780.

It is an arithmetic number, because the mean of its divisors is an integer number (10591911360).

Almost surely, 2^215212240354 is an apocalyptic number.

215212240354 is a deficient number, since it is larger than the sum of its proper divisors (123728923166).

215212240354 is a wasteful number, since it uses less digits than its factorization.

215212240354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41506.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 215212240354 its reverse (453042212512), we get a palindrome (668254452866).

The spelling of 215212240354 in words is "two hundred fifteen billion, two hundred twelve million, two hundred forty thousand, three hundred fifty-four".