72126318248 has 8 divisors (see below), whose sum is σ = 135236846730. Its totient is φ = 36063159120.

The previous prime is 72126318233. The next prime is 72126318293. The reversal of 72126318248 is 84281362127.

It can be written as a sum of positive squares in only one way, i.e., 70935930244 + 1190388004 = 266338^2 + 34502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 72126318199 and 72126318208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4507894883 + ... + 4507894898.

Almost surely, 2^72126318248 is an apocalyptic number.

It is an amenable number.

72126318248 is a deficient number, since it is larger than the sum of its proper divisors (63110528482).

72126318248 is a wasteful number, since it uses less digits than its factorization.

72126318248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015789787 (or 9015789783 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The spelling of 72126318248 in words is "seventy-two billion, one hundred twenty-six million, three hundred eighteen thousand, two hundred forty-eight".