51400135417 has 2 divisors, whose sum is σ = 51400135418. Its totient is φ = 51400135416.

The previous prime is 51400135393. The next prime is 51400135429. The reversal of 51400135417 is 71453100415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41601313296 + 9798822121 = 203964^2 + 98989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51400135417 is a prime.

It is not a weakly prime, because it can be changed into another prime (51400133417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25700067708 + 25700067709.

It is an arithmetic number, because the mean of its divisors is an integer number (25700067709).

Almost surely, 2^51400135417 is an apocalyptic number.

It is an amenable number.

51400135417 is a deficient number, since it is larger than the sum of its proper divisors (1).

51400135417 is an equidigital number, since it uses as much as digits as its factorization.

51400135417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 51400135417 in words is "fifty-one billion, four hundred million, one hundred thirty-five thousand, four hundred seventeen".