428047721759 has 12 divisors (see below), whose sum is σ = 524140068600. Its totient is φ = 347587622928.

The previous prime is 428047721737. The next prime is 428047721821. The reversal of 428047721759 is 957127740824.

It is not a de Polignac number, because 428047721759 - 2¹² = 428047717663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428047721719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229885064 + ... + 229886925.

It is an arithmetic number, because the mean of its divisors is an integer number (43678339050).

Almost surely, 2^428047721759 is an apocalyptic number.

428047721759 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

428047721759 is a deficient number, since it is larger than the sum of its proper divisors (96092346841).

428047721759 is a wasteful number, since it uses less digits than its factorization.

428047721759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459772022 (or 459772015 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 428047721759 in words is "four hundred twenty-eight billion, forty-seven million, seven hundred twenty-one thousand, seven hundred fifty-nine".