65632799237 has 2 divisors, whose sum is σ = 65632799238. Its totient is φ = 65632799236.

The previous prime is 65632799231. The next prime is 65632799341. The reversal of 65632799237 is 73299723656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38272661956 + 27360137281 = 195634^2 + 165409^2 .

It is a cyclic number.

It is not a de Polignac number, because 65632799237 - 2⁶ = 65632799173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65632799231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32816399618 + 32816399619.

It is an arithmetic number, because the mean of its divisors is an integer number (32816399619).

Almost surely, 2^65632799237 is an apocalyptic number.

It is an amenable number.

65632799237 is a deficient number, since it is larger than the sum of its proper divisors (1).

65632799237 is an equidigital number, since it uses as much as digits as its factorization.

65632799237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25719120, while the sum is 59.

The spelling of 65632799237 in words is "sixty-five billion, six hundred thirty-two million, seven hundred ninety-nine thousand, two hundred thirty-seven".