51232964409 has 63 divisors (see below), whose sum is σ = 85861346389. Its totient is φ = 29416056120.

The previous prime is 51232964399. The next prime is 51232964429. The reversal of 51232964409 is 90446923215.

The square root of 51232964409 is 226347.

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

51232964409 is a `hidden beast` number, since 5 + 1 + 232 + 9 + 6 + 4 + 409 = 666.

It is not a de Polignac number, because 51232964409 - 2¹⁹ = 51232440121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51232964429) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 2696471802 + ... + 2696471820.

Almost surely, 2^51232964409 is an apocalyptic number.

51232964409 is the 226347-th square number.

51232964409 is the 113174-th centered octagonal number.

It is an amenable number.

51232964409 is a deficient number, since it is larger than the sum of its proper divisors (34628381980).

51232964409 is an frugal number, since it uses more digits than its factorization.

51232964409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 51232964409 in words is "fifty-one billion, two hundred thirty-two million, nine hundred sixty-four thousand, four hundred nine".