2128104747 has 18 divisors (see below), whose sum is σ = 3244234812. Its totient is φ = 1344064104.

The previous prime is 2128104731. The next prime is 2128104749. The reversal of 2128104747 is 7474018212.

It is not a de Polignac number, because 2128104747 - 2⁴ = 2128104731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2128104749) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 324253 + ... + 330750.

Almost surely, 2^2128104747 is an apocalyptic number.

2128104747 is a deficient number, since it is larger than the sum of its proper divisors (1116130065).

2128104747 is a wasteful number, since it uses less digits than its factorization.

2128104747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655047 (or 655025 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2128104747 is about 46131.3857043120. The cubic root of 2128104747 is about 1286.2666223092.

The spelling of 2128104747 in words is "two billion, one hundred twenty-eight million, one hundred four thousand, seven hundred forty-seven".