51783904972799 has 4 divisors (see below), whose sum is σ = 52156451051880. Its totient is φ = 51411358893720.

The previous prime is 51783904972741. The next prime is 51783904972837. The reversal of 51783904972799 is 99727940938715.

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

It is a cyclic number.

It is not a de Polignac number, because 51783904972799 - 2³⁶ = 51715185496063 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 (51783904972739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186273039332 + ... + 186273039609.

It is an arithmetic number, because the mean of its divisors is an integer number (13039112762970).

Almost surely, 2^{51783904972799} is an apocalyptic number.

51783904972799 is a deficient number, since it is larger than the sum of its proper divisors (372546079081).

51783904972799 is a wasteful number, since it uses less digits than its factorization.

51783904972799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372546079080.

The product of its (nonzero) digits is 2160406080, while the sum is 80.

The spelling of 51783904972799 in words is "fifty-one trillion, seven hundred eighty-three billion, nine hundred four million, nine hundred seventy-two thousand, seven hundred ninety-nine".