51782548326117 has 48 divisors (see below), whose sum is σ = 80826582946752. Its totient is φ = 29401921624320.

The previous prime is 51782548326101. The next prime is 51782548326221. The reversal of 51782548326117 is 71162384528715.

It is not a de Polignac number, because 51782548326117 - 2⁴ = 51782548326101 is a prime.

It is a super-2 number, since 2×51782548326117² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51782548326017) 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, 107992617 + ... + 108471057.

It is an arithmetic number, because the mean of its divisors is an integer number (1683887144724).

Almost surely, 2^{51782548326117} is an apocalyptic number.

It is an amenable number.

51782548326117 is a deficient number, since it is larger than the sum of its proper divisors (29044034620635).

51782548326117 is a wasteful number, since it uses less digits than its factorization.

51782548326117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483138 (or 483131 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 60.

The spelling of 51782548326117 in words is "fifty-one trillion, seven hundred eighty-two billion, five hundred forty-eight million, three hundred twenty-six thousand, one hundred seventeen".