51004661573 has 16 divisors (see below), whose sum is σ = 52106164992. Its totient is φ = 49912200000.

The previous prime is 51004661537. The next prime is 51004661611. The reversal of 51004661573 is 37516640015.

It is a cyclic number.

It is not a de Polignac number, because 51004661573 - 2⁸ = 51004661317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004661503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21786383 + ... + 21788723.

It is an arithmetic number, because the mean of its divisors is an integer number (3256635312).

Almost surely, 2^51004661573 is an apocalyptic number.

It is an amenable number.

51004661573 is a deficient number, since it is larger than the sum of its proper divisors (1101503419).

51004661573 is a wasteful number, since it uses less digits than its factorization.

51004661573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 51004661573 in words is "fifty-one billion, four million, six hundred sixty-one thousand, five hundred seventy-three".