16878070637 has 2 divisors, whose sum is σ = 16878070638. Its totient is φ = 16878070636.

The previous prime is 16878070549. The next prime is 16878070669. The reversal of 16878070637 is 73607087861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14395440361 + 2482630276 = 119981^2 + 49826^2 .

It is a cyclic number.

It is not a de Polignac number, because 16878070637 - 2¹⁰ = 16878069613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16878070037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8439035318 + 8439035319.

It is an arithmetic number, because the mean of its divisors is an integer number (8439035319).

Almost surely, 2^16878070637 is an apocalyptic number.

It is an amenable number.

16878070637 is a deficient number, since it is larger than the sum of its proper divisors (1).

16878070637 is an equidigital number, since it uses as much as digits as its factorization.

16878070637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 16878070637 in words is "sixteen billion, eight hundred seventy-eight million, seventy thousand, six hundred thirty-seven".