Search a number
-
+
67888888897 is a prime number
BaseRepresentation
bin111111001110011111…
…100011110001000001
320111020021220212212111
4333032133203301001
52103014023421042
651104314255321
74622231014534
oct771637436101
9214207825774
1067888888897
1126878565055
12111a7a27541
13652bc6929b
1434004b6a1b
151b75101517
hexfce7e3c41

67888888897 has 2 divisors, whose sum is σ = 67888888898. Its totient is φ = 67888888896.

The previous prime is 67888888889. The next prime is 67888888939. The reversal of 67888888897 is 79888888876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63930088336 + 3958800561 = 252844^2 + 62919^2 .

It is a cyclic number.

It is not a de Polignac number, because 67888888897 - 23 = 67888888889 is a prime.

It is not a weakly prime, because it can be changed into another prime (67888888877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33944444448 + 33944444449.

It is an arithmetic number, because the mean of its divisors is an integer number (33944444449).

Almost surely, 267888888897 is an apocalyptic number.

It is an amenable number.

67888888897 is a deficient number, since it is larger than the sum of its proper divisors (1).

67888888897 is an equidigital number, since it uses as much as digits as its factorization.

67888888897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5549064192, while the sum is 85.

The spelling of 67888888897 in words is "sixty-seven billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-seven".