72142767471 has 4 divisors (see below), whose sum is σ = 96190356632. Its totient is φ = 48095178312.

The previous prime is 72142767419. The next prime is 72142767493. The reversal of 72142767471 is 17476724127.

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

It is not a de Polignac number, because 72142767471 - 2⁶ = 72142767407 is a prime.

It is a super-4 number, since 4×72142767471⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

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 72142767471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72142777471) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 12023794576 + ... + 12023794581.

It is an arithmetic number, because the mean of its divisors is an integer number (24047589158).

Almost surely, 2^72142767471 is an apocalyptic number.

72142767471 is a deficient number, since it is larger than the sum of its proper divisors (24047589161).

72142767471 is a wasteful number, since it uses less digits than its factorization.

72142767471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24047589160.

The product of its digits is 921984, while the sum is 48.

The spelling of 72142767471 in words is "seventy-two billion, one hundred forty-two million, seven hundred sixty-seven thousand, four hundred seventy-one".