215544044002042 has 24 divisors (see below), whose sum is σ = 384848929070496. Its totient is φ = 90227739347928.

The previous prime is 215544044002033. The next prime is 215544044002057. The reversal of 215544044002042 is 240200440445512.

It is a junction number, because it is equal to n+sod(n) for n = 215544044001992 and 215544044002010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25574751838 + ... + 25574760265.

It is an arithmetic number, because the mean of its divisors is an integer number (16035372044604).

Almost surely, 2^{215544044002042} is an apocalyptic number.

215544044002042 is a deficient number, since it is larger than the sum of its proper divisors (169304885068454).

215544044002042 is a wasteful number, since it uses less digits than its factorization.

215544044002042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51149512162 (or 51149512155 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 215544044002042 its reverse (240200440445512), we get a palindrome (455744484447554).

The spelling of 215544044002042 in words is "two hundred fifteen trillion, five hundred forty-four billion, forty-four million, two thousand, forty-two".