428785503101 has 8 divisors (see below), whose sum is σ = 454019193144. Its totient is φ = 403553036800.

The previous prime is 428785503077. The next prime is 428785503109. The reversal of 428785503101 is 101305587824.

It can be written as a sum of positive squares in 4 ways, for example, as 158603859001 + 270181644100 = 398251^2 + 519790^2 .

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 428785503101 - 2²² = 428781308797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428785503109) 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, 472001 + ... + 1039401.

It is an arithmetic number, because the mean of its divisors is an integer number (56752399143).

Almost surely, 2^428785503101 is an apocalyptic number.

It is an amenable number.

428785503101 is a deficient number, since it is larger than the sum of its proper divisors (25233690043).

428785503101 is a wasteful number, since it uses less digits than its factorization.

428785503101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611871.

The product of its (nonzero) digits is 268800, while the sum is 44.

The spelling of 428785503101 in words is "four hundred twenty-eight billion, seven hundred eighty-five million, five hundred three thousand, one hundred one".