4128756377 has 2 divisors, whose sum is σ = 4128756378. Its totient is φ = 4128756376.

The previous prime is 4128756301. The next prime is 4128756397. The reversal of 4128756377 is 7736578214.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3107059081 + 1021697296 = 55741^2 + 31964^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128756377 - 2¹² = 4128752281 is a prime.

It is a super-2 number, since 2×4128756377² = 34093258441236332258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4128756397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2064378188 + 2064378189.

It is an arithmetic number, because the mean of its divisors is an integer number (2064378189).

Almost surely, 2^4128756377 is an apocalyptic number.

It is an amenable number.

4128756377 is a deficient number, since it is larger than the sum of its proper divisors (1).

4128756377 is an equidigital number, since it uses as much as digits as its factorization.

4128756377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1975680, while the sum is 50.

The square root of 4128756377 is about 64255.3995941197. The cubic root of 4128756377 is about 1604.2538337939.

The spelling of 4128756377 in words is "four billion, one hundred twenty-eight million, seven hundred fifty-six thousand, three hundred seventy-seven".