4256734439977 has 2 divisors, whose sum is σ = 4256734439978. Its totient is φ = 4256734439976.

The previous prime is 4256734439941. The next prime is 4256734439981. The reversal of 4256734439977 is 7799344376524.

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., 2400875874576 + 1855858565401 = 1549476^2 + 1362299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4256734439977 is a prime.

It is not a weakly prime, because it can be changed into another prime (4256734839977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128367219988 + 2128367219989.

It is an arithmetic number, because the mean of its divisors is an integer number (2128367219989).

Almost surely, 2^{4256734439977} is an apocalyptic number.

It is an amenable number.

4256734439977 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256734439977 is an equidigital number, since it uses as much as digits as its factorization.

4256734439977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960180480, while the sum is 70.

The spelling of 4256734439977 in words is "four trillion, two hundred fifty-six billion, seven hundred thirty-four million, four hundred thirty-nine thousand, nine hundred seventy-seven".