72142936445 has 16 divisors (see below), whose sum is σ = 91167127680. Its totient is φ = 54653227200.

The previous prime is 72142936423. The next prime is 72142936451. The reversal of 72142936445 is 54463924127.

It is not a de Polignac number, because 72142936445 - 2⁸ = 72142936189 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72142936445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60200 + ... + 384590.

It is an arithmetic number, because the mean of its divisors is an integer number (5697945480).

Almost surely, 2^72142936445 is an apocalyptic number.

It is an amenable number.

72142936445 is a deficient number, since it is larger than the sum of its proper divisors (19024191235).

72142936445 is a wasteful number, since it uses less digits than its factorization.

72142936445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326756.

The product of its digits is 1451520, while the sum is 47.

The spelling of 72142936445 in words is "seventy-two billion, one hundred forty-two million, nine hundred thirty-six thousand, four hundred forty-five".