55556671729967 has 2 divisors, whose sum is σ = 55556671729968. Its totient is φ = 55556671729966.

The previous prime is 55556671729943. The next prime is 55556671730003. The reversal of 55556671729967 is 76992717665555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55556671729967 - 2⁶ = 55556671729903 is a prime.

It is a super-2 number, since 2×55556671729967² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55556671729891 and 55556671729900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55556671729927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778335864983 + 27778335864984.

It is an arithmetic number, because the mean of its divisors is an integer number (27778335864984).

Almost surely, 2^{55556671729967} is an apocalyptic number.

55556671729967 is a deficient number, since it is larger than the sum of its proper divisors (1).

55556671729967 is an equidigital number, since it uses as much as digits as its factorization.

55556671729967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7501410000, while the sum is 80.

The spelling of 55556671729967 in words is "fifty-five trillion, five hundred fifty-six billion, six hundred seventy-one million, seven hundred twenty-nine thousand, nine hundred sixty-seven".