428370617768 has 32 divisors (see below), whose sum is σ = 845022485160. Its totient is φ = 203313669120.

The previous prime is 428370617767. The next prime is 428370617771. The reversal of 428370617768 is 867716073824.

It can be written as a sum of positive squares in 4 ways, for example, as 197742081124 + 230628536644 = 444682^2 + 480238^2 .

It is not an unprimeable number, because it can be changed into a prime (428370617767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17636621 + ... + 17660892.

Almost surely, 2^428370617768 is an apocalyptic number.

It is an amenable number.

428370617768 is a deficient number, since it is larger than the sum of its proper divisors (416651867392).

428370617768 is a wasteful number, since it uses less digits than its factorization.

428370617768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35297597 (or 35297593 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 59.

The spelling of 428370617768 in words is "four hundred twenty-eight billion, three hundred seventy million, six hundred seventeen thousand, seven hundred sixty-eight".