72049776866791 has 4 divisors (see below), whose sum is σ = 72050152320000. Its totient is φ = 72049401413584.

The previous prime is 72049776866773. The next prime is 72049776866797. The reversal of 72049776866791 is 19766867794027.

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

It is a cyclic number.

It is not a de Polignac number, because 72049776866791 - 2³⁹ = 71500021052903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72049776866797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187438606 + ... + 187822603.

It is an arithmetic number, because the mean of its divisors is an integer number (18012538080000).

Almost surely, 2^{72049776866791} is an apocalyptic number.

72049776866791 is a deficient number, since it is larger than the sum of its proper divisors (375453209).

72049776866791 is a wasteful number, since it uses less digits than its factorization.

72049776866791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375453208.

The product of its (nonzero) digits is 2688505344, while the sum is 79.

The spelling of 72049776866791 in words is "seventy-two trillion, forty-nine billion, seven hundred seventy-six million, eight hundred sixty-six thousand, seven hundred ninety-one".