72143565137 has 8 divisors (see below), whose sum is σ = 84204039936. Its totient is φ = 60521653152.

The previous prime is 72143565127. The next prime is 72143565161. The reversal of 72143565137 is 73156534127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72143565137 - 2⁸ = 72143564881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72143565107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109640348 + ... + 109641005.

It is an arithmetic number, because the mean of its divisors is an integer number (10525504992).

Almost surely, 2^72143565137 is an apocalyptic number.

It is an amenable number.

72143565137 is a deficient number, since it is larger than the sum of its proper divisors (12060474799).

72143565137 is a wasteful number, since it uses less digits than its factorization.

72143565137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219281407.

The product of its digits is 529200, while the sum is 44.

The spelling of 72143565137 in words is "seventy-two billion, one hundred forty-three million, five hundred sixty-five thousand, one hundred thirty-seven".