72273762554 has 32 divisors (see below), whose sum is σ = 126838588800. Its totient is φ = 30873485664.

The previous prime is 72273762551. The next prime is 72273762559. The reversal of 72273762554 is 45526737227.

It is not an unprimeable number, because it can be changed into a prime (72273762551) 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 15 ways as a sum of consecutive naturals, for example, 39014 + ... + 382190.

It is an arithmetic number, because the mean of its divisors is an integer number (3963705900).

Almost surely, 2^72273762554 is an apocalyptic number.

72273762554 is a deficient number, since it is larger than the sum of its proper divisors (54564826246).

72273762554 is a wasteful number, since it uses less digits than its factorization.

72273762554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343507 (or 343493 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 50.

The spelling of 72273762554 in words is "seventy-two billion, two hundred seventy-three million, seven hundred sixty-two thousand, five hundred fifty-four".