428513782415808 has 56 divisors (see below), whose sum is σ = 1134040766882688. Its totient is φ = 142804577226496.

The previous prime is 428513782415791. The next prime is 428513782415899. The reversal of 428513782415808 is 808514287315824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259724316 + ... + 261368987.

It is an arithmetic number, because the mean of its divisors is an integer number (20250727980048).

Almost surely, 2^{428513782415808} is an apocalyptic number.

428513782415808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428513782415808 is an abundant number, since it is smaller than the sum of its proper divisors (705526984466880).

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

428513782415808 is a wasteful number, since it uses less digits than its factorization.

428513782415808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521097601 (or 521097591 counting only the distinct ones).

The product of its (nonzero) digits is 137625600, while the sum is 66.

The spelling of 428513782415808 in words is "four hundred twenty-eight trillion, five hundred thirteen billion, seven hundred eighty-two million, four hundred fifteen thousand, eight hundred eight".