51745406469216 has 96 divisors (see below), whose sum is σ = 140017591945728. Its totient is φ = 16720366394880.

The previous prime is 51745406469173. The next prime is 51745406469257. The reversal of 51745406469216 is 61296460454715.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 51745406469216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25915570 + ... + 27840753.

It is an arithmetic number, because the mean of its divisors is an integer number (1458516582768).

Almost surely, 2^{51745406469216} is an apocalyptic number.

It is an amenable number.

51745406469216 is an abundant number, since it is smaller than the sum of its proper divisors (88272185476512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51745406469216 is a wasteful number, since it uses less digits than its factorization.

51745406469216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53756644 (or 53756636 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 51745406469216 in words is "fifty-one trillion, seven hundred forty-five billion, four hundred six million, four hundred sixty-nine thousand, two hundred sixteen".