428018150821 has 8 divisors (see below), whose sum is σ = 430202864000. Its totient is φ = 425833776720.

The previous prime is 428018150801. The next prime is 428018150831. The reversal of 428018150821 is 128051810824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428018150821 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 (428018150801) 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, 2674615 + ... + 2830123.

It is an arithmetic number, because the mean of its divisors is an integer number (53775358000).

Almost surely, 2^428018150821 is an apocalyptic number.

It is an amenable number.

428018150821 is a deficient number, since it is larger than the sum of its proper divisors (2184713179).

428018150821 is a wasteful number, since it uses less digits than its factorization.

428018150821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169539.

The product of its (nonzero) digits is 40960, while the sum is 40.

The spelling of 428018150821 in words is "four hundred twenty-eight billion, eighteen million, one hundred fifty thousand, eight hundred twenty-one".