3785257280272 has 20 divisors (see below), whose sum is σ = 7898084902540. Its totient is φ = 1747041821568.

The previous prime is 3785257280249. The next prime is 3785257280297. The reversal of 3785257280272 is 2720827525873.

It can be written as a sum of positive squares in 2 ways, for example, as 152665244176 + 3632592036096 = 390724^2 + 1905936^2 .

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 3 ways as a sum of consecutive naturals, for example, 9099175947 + ... + 9099176362.

It is an arithmetic number, because the mean of its divisors is an integer number (394904245127).

Almost surely, 2^{3785257280272} is an apocalyptic number.

It is an amenable number.

3785257280272 is an abundant number, since it is smaller than the sum of its proper divisors (4112827622268).

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

3785257280272 is a wasteful number, since it uses less digits than its factorization.

3785257280272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18198352330 (or 18198352324 counting only the distinct ones).

The product of its (nonzero) digits is 26342400, while the sum is 58.

The spelling of 3785257280272 in words is "three trillion, seven hundred eighty-five billion, two hundred fifty-seven million, two hundred eighty thousand, two hundred seventy-two".