72154412433 has 6 divisors (see below), whose sum is σ = 104223040194. Its totient is φ = 48102941616.

The previous prime is 72154412389. The next prime is 72154412459. The reversal of 72154412433 is 33421445127.

72154412433 is a `hidden beast` number, since 7 + 215 + 4 + 4 + 1 + 2 + 433 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58792670784 + 13361741649 = 242472^2 + 115593^2 .

It is not a de Polignac number, because 72154412433 - 2⁸ = 72154412177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72154412933) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 4008578460 + ... + 4008578477.

It is an arithmetic number, because the mean of its divisors is an integer number (17370506699).

Almost surely, 2^72154412433 is an apocalyptic number.

It is an amenable number.

72154412433 is a deficient number, since it is larger than the sum of its proper divisors (32068627761).

72154412433 is a wasteful number, since it uses less digits than its factorization.

72154412433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017156943 (or 8017156940 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The spelling of 72154412433 in words is "seventy-two billion, one hundred fifty-four million, four hundred twelve thousand, four hundred thirty-three".