65923491437 has 2 divisors, whose sum is σ = 65923491438. Its totient is φ = 65923491436.

The previous prime is 65923491427. The next prime is 65923491481. The reversal of 65923491437 is 73419432956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55595037796 + 10328453641 = 235786^2 + 101629^2 .

It is a cyclic number.

It is not a de Polignac number, because 65923491437 - 2⁴ = 65923491421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65923491407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32961745718 + 32961745719.

It is an arithmetic number, because the mean of its divisors is an integer number (32961745719).

Almost surely, 2^65923491437 is an apocalyptic number.

It is an amenable number.

65923491437 is a deficient number, since it is larger than the sum of its proper divisors (1).

65923491437 is an equidigital number, since it uses as much as digits as its factorization.

65923491437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 53.

The spelling of 65923491437 in words is "sixty-five billion, nine hundred twenty-three million, four hundred ninety-one thousand, four hundred thirty-seven".