609381128457 has 6 divisors (see below), whose sum is σ = 880217185562. Its totient is φ = 406254085632.

The previous prime is 609381128413. The next prime is 609381128459. The reversal of 609381128457 is 754821183906.

609381128457 is a `hidden beast` number, since 6 + 0 + 93 + 81 + 1 + 28 + 457 = 666.

It can be written as a sum of positive squares in only one way, i.e., 588060456201 + 21320672256 = 766851^2 + 146016^2 .

It is not a de Polignac number, because 609381128457 - 2²⁴ = 609364351241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609381128459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33854507128 + ... + 33854507145.

It is a 1-persistent number, because it is pandigital, but 2⋅609381128457 = 1218762256914 is not.

Almost surely, 2^609381128457 is an apocalyptic number.

It is an amenable number.

609381128457 is a deficient number, since it is larger than the sum of its proper divisors (270836057105).

609381128457 is a wasteful number, since it uses less digits than its factorization.

609381128457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67709014279 (or 67709014276 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 609381128457 in words is "six hundred nine billion, three hundred eighty-one million, one hundred twenty-eight thousand, four hundred fifty-seven".