215401984640002 has 16 divisors (see below), whose sum is σ = 331602173869752. Its totient is φ = 104897592292480.

The previous prime is 215401984639997. The next prime is 215401984640021. The reversal of 215401984640002 is 200046489104512.

It can be written as a sum of positive squares in 4 ways, for example, as 214638351592681 + 763633047321 = 14650541^2 + 873861^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7416387649 + ... + 7416416692.

Almost surely, 2^{215401984640002} is an apocalyptic number.

215401984640002 is a deficient number, since it is larger than the sum of its proper divisors (116200189229750).

215401984640002 is a wasteful number, since it uses less digits than its factorization.

215401984640002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14832804533.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 215401984640002 in words is "two hundred fifteen trillion, four hundred one billion, nine hundred eighty-four million, six hundred forty thousand, two".