51640916141 has 2 divisors, whose sum is σ = 51640916142. Its totient is φ = 51640916140.

The previous prime is 51640916123. The next prime is 51640916143. The reversal of 51640916141 is 14161904615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51569868100 + 71048041 = 227090^2 + 8429^2 .

It is a cyclic number.

It is not a de Polignac number, because 51640916141 - 2⁶ = 51640916077 is a prime.

Together with 51640916143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 51640916095 and 51640916104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51640916143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25820458070 + 25820458071.

It is an arithmetic number, because the mean of its divisors is an integer number (25820458071).

Almost surely, 2^51640916141 is an apocalyptic number.

It is an amenable number.

51640916141 is a deficient number, since it is larger than the sum of its proper divisors (1).

51640916141 is an equidigital number, since it uses as much as digits as its factorization.

51640916141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 51640916141 in words is "fifty-one billion, six hundred forty million, nine hundred sixteen thousand, one hundred forty-one".