428361651049 has 4 divisors (see below), whose sum is σ = 428362967764. Its totient is φ = 428360334336.

The previous prime is 428361651037. The next prime is 428361651071. The reversal of 428361651049 is 940156163824.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 241603707024 + 186757944025 = 491532^2 + 432155^2 .

It is a cyclic number.

It is not a de Polignac number, because 428361651049 - 2⁵ = 428361651017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428361650993 and 428361651011.

It is not an unprimeable number, because it can be changed into a prime (428361651019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222349 + ... + 951925.

It is an arithmetic number, because the mean of its divisors is an integer number (107090741941).

Almost surely, 2^428361651049 is an apocalyptic number.

It is an amenable number.

428361651049 is a deficient number, since it is larger than the sum of its proper divisors (1316715).

428361651049 is an equidigital number, since it uses as much as digits as its factorization.

428361651049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316714.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 428361651049 in words is "four hundred twenty-eight billion, three hundred sixty-one million, six hundred fifty-one thousand, forty-nine".