72560942866 has 4 divisors (see below), whose sum is σ = 108841414302. Its totient is φ = 36280471432.

The previous prime is 72560942827. The next prime is 72560942911. The reversal of 72560942866 is 66824906527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66824906527 = 193 ⋅346243039.

It can be written as a sum of positive squares in only one way, i.e., 72552116025 + 8826841 = 269355^2 + 2971^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18140235715 + ... + 18140235718.

Almost surely, 2^72560942866 is an apocalyptic number.

72560942866 is a deficient number, since it is larger than the sum of its proper divisors (36280471436).

72560942866 is a wasteful number, since it uses less digits than its factorization.

72560942866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36280471435.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 72560942866 in words is "seventy-two billion, five hundred sixty million, nine hundred forty-two thousand, eight hundred sixty-six".