428169603641 has 8 divisors (see below), whose sum is σ = 488229593544. Its totient is φ = 371984451840.

The previous prime is 428169603637. The next prime is 428169603671. The reversal of 428169603641 is 146306961824.

It can be written as a sum of positive squares in 4 ways, for example, as 2506003600 + 425663600041 = 50060^2 + 652429^2 .

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 428169603641 - 2² = 428169603637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428169603641.

It is not an unprimeable number, because it can be changed into a prime (428169603671) 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, 968709290 + ... + 968709731.

It is an arithmetic number, because the mean of its divisors is an integer number (61028699193).

Almost surely, 2^428169603641 is an apocalyptic number.

It is an amenable number.

428169603641 is a deficient number, since it is larger than the sum of its proper divisors (60059989903).

428169603641 is a wasteful number, since it uses less digits than its factorization.

428169603641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937419051.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 428169603641 in words is "four hundred twenty-eight billion, one hundred sixty-nine million, six hundred three thousand, six hundred forty-one".