428802336377 has 2 divisors, whose sum is σ = 428802336378. Its totient is φ = 428802336376.

The previous prime is 428802336367. The next prime is 428802336419. The reversal of 428802336377 is 773633208824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427789251136 + 1013085241 = 654056^2 + 31829^2 .

It is a cyclic number.

It is not a de Polignac number, because 428802336377 - 2²⁶ = 428735227513 is a prime.

It is a super-2 number, since 2×428802336377² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428802336367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214401168188 + 214401168189.

It is an arithmetic number, because the mean of its divisors is an integer number (214401168189).

Almost surely, 2^428802336377 is an apocalyptic number.

It is an amenable number.

428802336377 is a deficient number, since it is larger than the sum of its proper divisors (1).

428802336377 is an equidigital number, since it uses as much as digits as its factorization.

428802336377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8128512, while the sum is 53.

The spelling of 428802336377 in words is "four hundred twenty-eight billion, eight hundred two million, three hundred thirty-six thousand, three hundred seventy-seven".