215740259330 has 32 divisors (see below), whose sum is σ = 412638902640. Its totient is φ = 80930805760.

The previous prime is 215740259321. The next prime is 215740259333. The reversal of 215740259330 is 33952047512.

It can be written as a sum of positive squares in 8 ways, for example, as 172430071009 + 43310188321 = 415247^2 + 208111^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215740259333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2210345 + ... + 2305884.

Almost surely, 2^215740259330 is an apocalyptic number.

215740259330 is a deficient number, since it is larger than the sum of its proper divisors (196898643310).

215740259330 is a wasteful number, since it uses less digits than its factorization.

215740259330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516534.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 215740259330 in words is "two hundred fifteen billion, seven hundred forty million, two hundred fifty-nine thousand, three hundred thirty".