671828041237 has 2 divisors, whose sum is σ = 671828041238. Its totient is φ = 671828041236.

The previous prime is 671828041219. The next prime is 671828041277. The reversal of 671828041237 is 732140828176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649755293476 + 22072747761 = 806074^2 + 148569^2 .

It is a cyclic number.

It is not a de Polignac number, because 671828041237 - 2³¹ = 669680557589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671828041277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335914020618 + 335914020619.

It is an arithmetic number, because the mean of its divisors is an integer number (335914020619).

Almost surely, 2^671828041237 is an apocalyptic number.

It is an amenable number.

671828041237 is a deficient number, since it is larger than the sum of its proper divisors (1).

671828041237 is an equidigital number, since it uses as much as digits as its factorization.

671828041237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 671828041237 in words is "six hundred seventy-one billion, eight hundred twenty-eight million, forty-one thousand, two hundred thirty-seven".