726520123012 has 6 divisors (see below), whose sum is σ = 1271410215278. Its totient is φ = 363260061504.

The previous prime is 726520123001. The next prime is 726520123067. The reversal of 726520123012 is 210321025627.

726520123012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 693449245696 + 33070877316 = 832736^2 + 181854^2 .

It is a super-2 number, since 2×726520123012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90815015373 + ... + 90815015380.

Almost surely, 2^726520123012 is an apocalyptic number.

It is an amenable number.

726520123012 is a deficient number, since it is larger than the sum of its proper divisors (544890092266).

726520123012 is a wasteful number, since it uses less digits than its factorization.

726520123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181630030757 (or 181630030755 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 726520123012 its reverse (210321025627), we get a palindrome (936841148639).

The spelling of 726520123012 in words is "seven hundred twenty-six billion, five hundred twenty million, one hundred twenty-three thousand, twelve".