215140440602 has 4 divisors (see below), whose sum is σ = 322710660906. Its totient is φ = 107570220300.

The previous prime is 215140440553. The next prime is 215140440701. The reversal of 215140440602 is 206044041512.

215140440602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 166440336841 + 48700103761 = 407971^2 + 220681^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 53785110149 + ... + 53785110152.

Almost surely, 2^215140440602 is an apocalyptic number.

215140440602 is a deficient number, since it is larger than the sum of its proper divisors (107570220304).

215140440602 is a wasteful number, since it uses less digits than its factorization.

215140440602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107570220303.

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 215140440602 in words is "two hundred fifteen billion, one hundred forty million, four hundred forty thousand, six hundred two".