42888408687169 has 2 divisors, whose sum is σ = 42888408687170. Its totient is φ = 42888408687168.

The previous prime is 42888408687097. The next prime is 42888408687253. The reversal of 42888408687169 is 96178680488824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41197142250000 + 1691266437169 = 6418500^2 + 1300487^2 .

It is a cyclic number.

It is not a de Polignac number, because 42888408687169 - 2¹⁵ = 42888408654401 is a prime.

It is a super-2 number, since 2×42888408687169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42888408657169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21444204343584 + 21444204343585.

It is an arithmetic number, because the mean of its divisors is an integer number (21444204343585).

Almost surely, 2^{42888408687169} is an apocalyptic number.

It is an amenable number.

42888408687169 is a deficient number, since it is larger than the sum of its proper divisors (1).

42888408687169 is an equidigital number, since it uses as much as digits as its factorization.

42888408687169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2378170368, while the sum is 79.

The spelling of 42888408687169 in words is "forty-two trillion, eight hundred eighty-eight billion, four hundred eight million, six hundred eighty-seven thousand, one hundred sixty-nine".