7251745386828 has 12 divisors (see below), whose sum is σ = 16920739235960. Its totient is φ = 2417248462272.

The previous prime is 7251745386761. The next prime is 7251745386841. The reversal of 7251745386828 is 8286835471527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×7251745386828³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 302156057773 + ... + 302156057796.

Almost surely, 2^{7251745386828} is an apocalyptic number.

It is an amenable number.

7251745386828 is an abundant number, since it is smaller than the sum of its proper divisors (9668993849132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7251745386828 is a wasteful number, since it uses less digits than its factorization.

7251745386828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604312115576 (or 604312115574 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 66.

The spelling of 7251745386828 in words is "seven trillion, two hundred fifty-one billion, seven hundred forty-five million, three hundred eighty-six thousand, eight hundred twenty-eight".