215034110543642 has 16 divisors (see below), whose sum is σ = 350802029543112. Its totient is φ = 98263873819200.

The previous prime is 215034110543621. The next prime is 215034110543711. The reversal of 215034110543642 is 246345011430512.

It can be written as a sum of positive squares in 4 ways, for example, as 132873826922281 + 82160283621361 = 11527091^2 + 9064231^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215034110543642.

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, 40943278133 + ... + 40943283384.

Almost surely, 2^{215034110543642} is an apocalyptic number.

215034110543642 is a deficient number, since it is larger than the sum of its proper divisors (135767918999470).

215034110543642 is a wasteful number, since it uses less digits than its factorization.

215034110543642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81886561633.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 215034110543642 in words is "two hundred fifteen trillion, thirty-four billion, one hundred ten million, five hundred forty-three thousand, six hundred forty-two".