477656530129 has 27 divisors (see below), whose sum is σ = 505194451209. Its totient is φ = 451582381800.

The previous prime is 477656530123. The next prime is 477656530229. The reversal of 477656530129 is 921035656774.

It is a happy number.

The square root of 477656530129 is 691127.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 477656530129 - 2³ = 477656530121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 477656530129.

It is not an unprimeable number, because it can be changed into a prime (477656530121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2400283972 + ... + 2400284170.

Almost surely, 2^477656530129 is an apocalyptic number.

477656530129 is the 691127-th square number.

477656530129 is the 345564-th centered octagonal number.

It is an amenable number.

477656530129 is a deficient number, since it is larger than the sum of its proper divisors (27537921080).

477656530129 is an frugal number, since it uses more digits than its factorization.

477656530129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 477656530129 in words is "four hundred seventy-seven billion, six hundred fifty-six million, five hundred thirty thousand, one hundred twenty-nine".