67630783837 has 2 divisors, whose sum is σ = 67630783838. Its totient is φ = 67630783836.

The previous prime is 67630783799. The next prime is 67630783901. The reversal of 67630783837 is 73838703676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66759707641 + 871076196 = 258379^2 + 29514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67630783837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67630783237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33815391918 + 33815391919.

It is an arithmetic number, because the mean of its divisors is an integer number (33815391919).

Almost surely, 2^67630783837 is an apocalyptic number.

It is an amenable number.

67630783837 is a deficient number, since it is larger than the sum of its proper divisors (1).

67630783837 is an equidigital number, since it uses as much as digits as its factorization.

67630783837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 67630783837 in words is "sixty-seven billion, six hundred thirty million, seven hundred eighty-three thousand, eight hundred thirty-seven".