3777128852 has 12 divisors (see below), whose sum is σ = 7554257760. Its totient is φ = 1618769496.

The previous prime is 3777128837. The next prime is 3777128857. The reversal of 3777128852 is 2588217773.

3777128852 is an admirable number.

It is a super-2 number, since 2×3777128852² = 28533404729221675808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3777128852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3777128857) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 67448702 + ... + 67448757.

It is an arithmetic number, because the mean of its divisors is an integer number (629521480).

Almost surely, 2^3777128852 is an apocalyptic number.

It is an amenable number.

3777128852 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3777128852 is a wasteful number, since it uses less digits than its factorization.

3777128852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134897470 (or 134897468 counting only the distinct ones).

The product of its digits is 1317120, while the sum is 50.

The square root of 3777128852 is about 61458.3505473422. The cubic root of 3777128852 is about 1557.3537280348.

The spelling of 3777128852 in words is "three billion, seven hundred seventy-seven million, one hundred twenty-eight thousand, eight hundred fifty-two".