72758478232 has 32 divisors (see below), whose sum is σ = 148956886080. Its totient is φ = 33042540960.

The previous prime is 72758478223. The next prime is 72758478239. The reversal of 72758478232 is 23287485727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72758478239) 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 7 ways as a sum of consecutive naturals, for example, 269298 + ... + 466945.

It is an arithmetic number, because the mean of its divisors is an integer number (4654902690).

Almost surely, 2^72758478232 is an apocalyptic number.

It is an amenable number.

72758478232 is an abundant number, since it is smaller than the sum of its proper divisors (76198407848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72758478232 is a wasteful number, since it uses less digits than its factorization.

72758478232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737383 (or 737379 counting only the distinct ones).

The product of its digits is 10536960, while the sum is 55.

The spelling of 72758478232 in words is "seventy-two billion, seven hundred fifty-eight million, four hundred seventy-eight thousand, two hundred thirty-two".