10428128621 has 8 divisors (see below), whose sum is σ = 10719872064. Its totient is φ = 10140409440.

The previous prime is 10428128609. The next prime is 10428128629. The reversal of 10428128621 is 12682182401.

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 10428128621 - 2¹⁴ = 10428112237 is a prime.

It is a super-2 number, since 2×10428128621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10428128629) 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, 1000811 + ... + 1011176.

It is an arithmetic number, because the mean of its divisors is an integer number (1339984008).

Almost surely, 2^10428128621 is an apocalyptic number.

It is an amenable number.

10428128621 is a deficient number, since it is larger than the sum of its proper divisors (291743443).

10428128621 is an equidigital number, since it uses as much as digits as its factorization.

10428128621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012131.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 10428128621 in words is "ten billion, four hundred twenty-eight million, one hundred twenty-eight thousand, six hundred twenty-one".