428303761779 has 8 divisors (see below), whose sum is σ = 579114945792. Its totient is φ = 281514209480.

The previous prime is 428303761777. The next prime is 428303761799. The reversal of 428303761779 is 977167303824.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428303761779 - 2¹ = 428303761777 is a prime.

It is a super-2 number, since 2×428303761779² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428303761771) 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, 1005407679 + ... + 1005408104.

It is an arithmetic number, because the mean of its divisors is an integer number (72389368224).

Almost surely, 2^428303761779 is an apocalyptic number.

428303761779 is a deficient number, since it is larger than the sum of its proper divisors (150811184013).

428303761779 is a wasteful number, since it uses less digits than its factorization.

428303761779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010815857.

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 428303761779 in words is "four hundred twenty-eight billion, three hundred three million, seven hundred sixty-one thousand, seven hundred seventy-nine".