72540554384 has 10 divisors (see below), whose sum is σ = 140547324150. Its totient is φ = 36270277184.

The previous prime is 72540554377. The next prime is 72540554393. The reversal of 72540554384 is 48345504527.

It can be written as a sum of positive squares in only one way, i.e., 47424643984 + 25115910400 = 217772^2 + 158480^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2266892309 + ... + 2266892340.

It is an arithmetic number, because the mean of its divisors is an integer number (14054732415).

Almost surely, 2^72540554384 is an apocalyptic number.

It is an amenable number.

72540554384 is a deficient number, since it is larger than the sum of its proper divisors (68006769766).

72540554384 is a wasteful number, since it uses less digits than its factorization.

72540554384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533784657 (or 4533784651 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 47.

The spelling of 72540554384 in words is "seventy-two billion, five hundred forty million, five hundred fifty-four thousand, three hundred eighty-four".