72815651841 has 8 divisors (see below), whose sum is σ = 97092568384. Its totient is φ = 48541251600.

The previous prime is 72815651833. The next prime is 72815651873. The reversal of 72815651841 is 14815651827.

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

It is not a de Polignac number, because 72815651841 - 2³ = 72815651833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72815650841) 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, 560485 + ... + 678066.

It is an arithmetic number, because the mean of its divisors is an integer number (12136571048).

Almost surely, 2^72815651841 is an apocalyptic number.

It is an amenable number.

72815651841 is a deficient number, since it is larger than the sum of its proper divisors (24276916543).

72815651841 is a wasteful number, since it uses less digits than its factorization.

72815651841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258151.

The product of its digits is 537600, while the sum is 48.

The spelling of 72815651841 in words is "seventy-two billion, eight hundred fifteen million, six hundred fifty-one thousand, eight hundred forty-one".