51504340546 has 4 divisors (see below), whose sum is σ = 77256510822. Its totient is φ = 25752170272.

The previous prime is 51504340529. The next prime is 51504340561. The reversal of 51504340546 is 64504340515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43424308225 + 8080032321 = 208385^2 + 89889^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12876085135 + ... + 12876085138.

Almost surely, 2^51504340546 is an apocalyptic number.

51504340546 is a deficient number, since it is larger than the sum of its proper divisors (25752170276).

51504340546 is a wasteful number, since it uses less digits than its factorization.

51504340546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25752170275.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 51504340546 in words is "fifty-one billion, five hundred four million, three hundred forty thousand, five hundred forty-six".