51765165053 has 16 divisors (see below), whose sum is σ = 62751542400. Its totient is φ = 41685904896.

The previous prime is 51765165013. The next prime is 51765165079. The reversal of 51765165053 is 35056156715.

It is a cyclic number.

It is not a de Polignac number, because 51765165053 - 2¹⁶ = 51765099517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51765164995 and 51765165013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51765165013) 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, 319328 + ... + 453321.

It is an arithmetic number, because the mean of its divisors is an integer number (3921971400).

Almost surely, 2^51765165053 is an apocalyptic number.

It is an amenable number.

51765165053 is a deficient number, since it is larger than the sum of its proper divisors (10986377347).

51765165053 is a wasteful number, since it uses less digits than its factorization.

51765165053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773236.

The product of its (nonzero) digits is 472500, while the sum is 44.

The spelling of 51765165053 in words is "fifty-one billion, seven hundred sixty-five million, one hundred sixty-five thousand, fifty-three".