723173540990 has 8 divisors (see below), whose sum is σ = 1301712373800. Its totient is φ = 289269416392.

The previous prime is 723173540959. The next prime is 723173541073. The reversal of 723173540990 is 99045371327.

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, 36158677040 + ... + 36158677059.

It is an arithmetic number, because the mean of its divisors is an integer number (162714046725).

Almost surely, 2^723173540990 is an apocalyptic number.

723173540990 is a deficient number, since it is larger than the sum of its proper divisors (578538832810).

723173540990 is a wasteful number, since it uses less digits than its factorization.

723173540990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72317354106.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 723173540990 in words is "seven hundred twenty-three billion, one hundred seventy-three million, five hundred forty thousand, nine hundred ninety".