72453770173 has 8 divisors (see below), whose sum is σ = 73141094880. Its totient is φ = 71766634320.

The previous prime is 72453770141. The next prime is 72453770197. The reversal of 72453770173 is 37107735427.

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

It is a cyclic number.

It is not a de Polignac number, because 72453770173 - 2⁵ = 72453770141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72453720173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794458 + ... + 880948.

It is an arithmetic number, because the mean of its divisors is an integer number (9142636860).

Almost surely, 2^72453770173 is an apocalyptic number.

It is an amenable number.

72453770173 is a deficient number, since it is larger than the sum of its proper divisors (687324707).

72453770173 is a wasteful number, since it uses less digits than its factorization.

72453770173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94427.

The product of its (nonzero) digits is 864360, while the sum is 46.

The spelling of 72453770173 in words is "seventy-two billion, four hundred fifty-three million, seven hundred seventy thousand, one hundred seventy-three".