72537930394 has 8 divisors (see below), whose sum is σ = 115207301268. Its totient is φ = 34135496640.

The previous prime is 72537930389. The next prime is 72537930397. The reversal of 72537930394 is 49303973527.

It can be written as a sum of positive squares in 2 ways, for example, as 68703224769 + 3834705625 = 262113^2 + 61925^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72537930397) 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 3 ways as a sum of consecutive naturals, for example, 1066734237 + ... + 1066734304.

Almost surely, 2^72537930394 is an apocalyptic number.

72537930394 is a deficient number, since it is larger than the sum of its proper divisors (42669370874).

72537930394 is a wasteful number, since it uses less digits than its factorization.

72537930394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133468560.

The product of its (nonzero) digits is 4286520, while the sum is 52.

The spelling of 72537930394 in words is "seventy-two billion, five hundred thirty-seven million, nine hundred thirty thousand, three hundred ninety-four".