51132020417 has 2 divisors, whose sum is σ = 51132020418. Its totient is φ = 51132020416.

The previous prime is 51132020273. The next prime is 51132020461. The reversal of 51132020417 is 71402023115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51086848576 + 45171841 = 226024^2 + 6721^2 .

It is a cyclic number.

It is not a de Polignac number, because 51132020417 - 2¹² = 51132016321 is a prime.

It is a super-2 number, since 2×51132020417² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51131020417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25566010208 + 25566010209.

It is an arithmetic number, because the mean of its divisors is an integer number (25566010209).

Almost surely, 2^51132020417 is an apocalyptic number.

It is an amenable number.

51132020417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51132020417 is an equidigital number, since it uses as much as digits as its factorization.

51132020417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 51132020417 in words is "fifty-one billion, one hundred thirty-two million, twenty thousand, four hundred seventeen".