72023505425167 has 4 divisors (see below), whose sum is σ = 72279816832656. Its totient is φ = 71767194017680.

The previous prime is 72023505425143. The next prime is 72023505425177. The reversal of 72023505425167 is 76152450532027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72023505425167 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72023505425167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72023505425177) 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, 128155703323 + ... + 128155703884.

It is an arithmetic number, because the mean of its divisors is an integer number (18069954208164).

Almost surely, 2^{72023505425167} is an apocalyptic number.

72023505425167 is a deficient number, since it is larger than the sum of its proper divisors (256311407489).

72023505425167 is a wasteful number, since it uses less digits than its factorization.

72023505425167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256311407488.

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 72023505425167 in words is "seventy-two trillion, twenty-three billion, five hundred five million, four hundred twenty-five thousand, one hundred sixty-seven".