4077781856 has 12 divisors (see below), whose sum is σ = 8028133092. Its totient is φ = 2038890912.

The previous prime is 4077781853. The next prime is 4077781861. The reversal of 4077781856 is 6581877704.

It is a junction number, because it is equal to n+sod(n) for n = 4077781798 and 4077781807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4077781853) 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 as a sum of consecutive naturals, namely, 63715310 + ... + 63715373.

It is an arithmetic number, because the mean of its divisors is an integer number (669011091).

Almost surely, 2^4077781856 is an apocalyptic number.

It is an amenable number.

4077781856 is a deficient number, since it is larger than the sum of its proper divisors (3950351236).

4077781856 is a wasteful number, since it uses less digits than its factorization.

4077781856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127430693 (or 127430685 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 53.

The square root of 4077781856 is about 63857.5121344388. The cubic root of 4077781856 is about 1597.6243201700.

The spelling of 4077781856 in words is "four billion, seventy-seven million, seven hundred eighty-one thousand, eight hundred fifty-six".