11667187703881 has 2 divisors, whose sum is σ = 11667187703882. Its totient is φ = 11667187703880.

The previous prime is 11667187703761. The next prime is 11667187703947. The reversal of 11667187703881 is 18830778176611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11245056823225 + 422130880656 = 3353365^2 + 649716^2 .

It is a cyclic number.

It is not a de Polignac number, because 11667187703881 - 2¹¹ = 11667187701833 is a prime.

It is a super-2 number, since 2×11667187703881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11667187703081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833593851940 + 5833593851941.

It is an arithmetic number, because the mean of its divisors is an integer number (5833593851941).

Almost surely, 2^{11667187703881} is an apocalyptic number.

It is an amenable number.

11667187703881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11667187703881 is an equidigital number, since it uses as much as digits as its factorization.

11667187703881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 64.

The spelling of 11667187703881 in words is "eleven trillion, six hundred sixty-seven billion, one hundred eighty-seven million, seven hundred three thousand, eight hundred eighty-one".