428719993752 has 16 divisors (see below), whose sum is σ = 1071799984440. Its totient is φ = 142906664576.

The previous prime is 428719993687. The next prime is 428719993753. The reversal of 428719993752 is 257399917824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428719993753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8931666513 + ... + 8931666560.

Almost surely, 2^428719993752 is an apocalyptic number.

It is an amenable number.

428719993752 is an abundant number, since it is smaller than the sum of its proper divisors (643079990688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428719993752 is a wasteful number, since it uses less digits than its factorization.

428719993752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17863333082 (or 17863333078 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 66.

The spelling of 428719993752 in words is "four hundred twenty-eight billion, seven hundred nineteen million, nine hundred ninety-three thousand, seven hundred fifty-two".