51774336461217 has 48 divisors (see below), whose sum is σ = 73416688899840. Its totient is φ = 32448384503808.

The previous prime is 51774336461213. The next prime is 51774336461261. The reversal of 51774336461217 is 71216463347715.

It is a happy number.

It is not a de Polignac number, because 51774336461217 - 2² = 51774336461213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51774336461213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3150623833 + ... + 3150640265.

It is an arithmetic number, because the mean of its divisors is an integer number (1529514352080).

Almost surely, 2^{51774336461217} is an apocalyptic number.

It is an amenable number.

51774336461217 is a deficient number, since it is larger than the sum of its proper divisors (21642352438623).

51774336461217 is a wasteful number, since it uses less digits than its factorization.

51774336461217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20442 (or 20425 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 57.

The spelling of 51774336461217 in words is "fifty-one trillion, seven hundred seventy-four billion, three hundred thirty-six million, four hundred sixty-one thousand, two hundred seventeen".