51332717851 has 16 divisors (see below), whose sum is σ = 53310216960. Its totient is φ = 49369451040.

The previous prime is 51332717837. The next prime is 51332717857. The reversal of 51332717851 is 15871723315.

It is a cyclic number.

It is not a de Polignac number, because 51332717851 - 2¹¹ = 51332715803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51332717798 and 51332717807.

It is not an unprimeable number, because it can be changed into a prime (51332717857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8326096 + ... + 8332258.

It is an arithmetic number, because the mean of its divisors is an integer number (3331888560).

Almost surely, 2^51332717851 is an apocalyptic number.

51332717851 is a deficient number, since it is larger than the sum of its proper divisors (1977499109).

51332717851 is a wasteful number, since it uses less digits than its factorization.

51332717851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266.

The product of its digits is 176400, while the sum is 43.

The spelling of 51332717851 in words is "fifty-one billion, three hundred thirty-two million, seven hundred seventeen thousand, eight hundred fifty-one".