723161863712 has 18 divisors (see below), whose sum is σ = 1423734389973. Its totient is φ = 361578526592.

The previous prime is 723161863667. The next prime is 723161863727. The reversal of 723161863712 is 217368161327.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 620887265296 + 102274598416 = 787964^2 + 319804^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=601316.

It is a super-2 number, since 2×723161863712² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 4735364 + ... + 4885692.

Almost surely, 2^723161863712 is an apocalyptic number.

It is an amenable number.

723161863712 is a deficient number, since it is larger than the sum of its proper divisors (700572526261).

723161863712 is an frugal number, since it uses more digits than its factorization.

723161863712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300668 (or 150331 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 723161863712 in words is "seven hundred twenty-three billion, one hundred sixty-one million, eight hundred sixty-three thousand, seven hundred twelve".