51204777740216 has 32 divisors (see below), whose sum is σ = 96121000038000. Its totient is φ = 25572512630016.

The previous prime is 51204777740197. The next prime is 51204777740219. The reversal of 51204777740216 is 61204777740215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51204777740219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354509420 + ... + 354653828.

Almost surely, 2^{51204777740216} is an apocalyptic number.

It is an amenable number.

51204777740216 is a deficient number, since it is larger than the sum of its proper divisors (44916222297784).

51204777740216 is a wasteful number, since it uses less digits than its factorization.

51204777740216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195831 (or 195827 counting only the distinct ones).

The product of its (nonzero) digits is 4609920, while the sum is 53.

Subtracting 51204777740216 from its reverse (61204777740215), we obtain a palindrome (9999999999999).

The spelling of 51204777740216 in words is "fifty-one trillion, two hundred four billion, seven hundred seventy-seven million, seven hundred forty thousand, two hundred sixteen".