720072166837 has 8 divisors (see below), whose sum is σ = 721363047552. Its totient is φ = 718781505600.

The previous prime is 720072166817. The next prime is 720072166873. The reversal of 720072166837 is 738661270027.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720072166837 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 (720072166817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7419012 + ... + 7515442.

It is an arithmetic number, because the mean of its divisors is an integer number (90170380944).

Almost surely, 2^720072166837 is an apocalyptic number.

It is an amenable number.

720072166837 is a deficient number, since it is larger than the sum of its proper divisors (1290880715).

720072166837 is a wasteful number, since it uses less digits than its factorization.

720072166837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109739.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 720072166837 in words is "seven hundred twenty billion, seventy-two million, one hundred sixty-six thousand, eight hundred thirty-seven".