65871212357 has 2 divisors, whose sum is σ = 65871212358. Its totient is φ = 65871212356.

The previous prime is 65871212333. The next prime is 65871212371. The reversal of 65871212357 is 75321217856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60794792356 + 5076420001 = 246566^2 + 71249^2 .

It is a cyclic number.

It is not a de Polignac number, because 65871212357 - 2⁶ = 65871212293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65871212377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32935606178 + 32935606179.

It is an arithmetic number, because the mean of its divisors is an integer number (32935606179).

Almost surely, 2^65871212357 is an apocalyptic number.

It is an amenable number.

65871212357 is a deficient number, since it is larger than the sum of its proper divisors (1).

65871212357 is an equidigital number, since it uses as much as digits as its factorization.

65871212357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 47.

The spelling of 65871212357 in words is "sixty-five billion, eight hundred seventy-one million, two hundred twelve thousand, three hundred fifty-seven".