72072929171743 has 4 divisors (see below), whose sum is σ = 73749043803688. Its totient is φ = 70396814539800.

The previous prime is 72072929171741. The next prime is 72072929171753. The reversal of 72072929171743 is 34717192927027.

It is a happy number.

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 72072929171743 - 2¹ = 72072929171741 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 (72072929171741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838057315908 + ... + 838057315993.

It is an arithmetic number, because the mean of its divisors is an integer number (18437260950922).

Almost surely, 2^{72072929171743} is an apocalyptic number.

72072929171743 is a deficient number, since it is larger than the sum of its proper divisors (1676114631945).

72072929171743 is a wasteful number, since it uses less digits than its factorization.

72072929171743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676114631944.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 72072929171743 in words is "seventy-two trillion, seventy-two billion, nine hundred twenty-nine million, one hundred seventy-one thousand, seven hundred forty-three".