72489185390 has 8 divisors (see below), whose sum is σ = 130480533720. Its totient is φ = 28995674152.

The previous prime is 72489185341. The next prime is 72489185411. The reversal of 72489185390 is 9358198427.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3624459260 + ... + 3624459279.

It is an arithmetic number, because the mean of its divisors is an integer number (16310066715).

Almost surely, 2^72489185390 is an apocalyptic number.

72489185390 is a deficient number, since it is larger than the sum of its proper divisors (57991348330).

72489185390 is a wasteful number, since it uses less digits than its factorization.

72489185390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7248918546.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 72489185390 in words is "seventy-two billion, four hundred eighty-nine million, one hundred eighty-five thousand, three hundred ninety".